Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b8f1b3c6a95a0ed…

MALICIOUS

PDF

3.3 KB
MD5: e0257ebe61fe418a4237e7bff623c08e SHA-1: 65dd82e1594260a9a1c7384c4b789fecf9fdc244 SHA-256: 7b8f1b3c6a95a0ed5e9fa857041a0ab518850f0e65ded41dca084f1c2e6c59e6
108 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The file was detected by ClamAV as Pdf.Exploit.Agent-36121, and ML classifiers also flagged it as malicious. Embedded JavaScript streams are present, indicating the likely execution of arbitrary code, which is a common technique for exploiting PDF vulnerabilities. The exact nature of the exploit and its payload could not be determined due to obfuscation.

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
f23b6a4e1ca48cb3ae2aef48807d7c6b404039148695a44f92065125134c338b		 pdf-javascript-stream PDF /JS object 7 at offset 0xA86 339 bytes

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