Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dda3a9d73c44a38…

MALICIOUS

PDF

3.3 KB
MD5: e12fe2c7cc545d4fbb5ecab5c0205a98 SHA-1: 82607055d9baf518e5e053e3126e3daa7f6ae2cf SHA-256: 1dda3a9d73c44a3830e3533fa9465e458aefe5ecd993ea0c9123cb993e215c20
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript T1559.001 Component Object Model

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, specifically as Pdf.Exploit.Agent-36121. Static analysis revealed embedded JavaScript, indicating an attempt to exploit PDF vulnerabilities. The JavaScript action is likely designed to download and execute a second-stage payload, though the exact functionality is obscured.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36121 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36121
  • JavaScript action low 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_obj0007_000.js
872f5c8f2739afc608fe6cdcf28ddd7cc36961340b6a762fb4351951dd06c377		 pdf-javascript-stream PDF /JS object 7 at offset 0xA78 307 bytes

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