Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fbed5e6b16c17f5…

MALICIOUS

PDF

3.2 KB
MD5: e44b29cf0c69b177fb48e2d2c788db71 SHA-1: 2d7f15a6691ca8789b058b1b127258ab23dd5591 SHA-256: 1fbed5e6b16c17f54b6e3e8b3a9d8f3db3ada45b87747ba5b1b4327ed0f5ee3b
108 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

This PDF was flagged as malicious by ClamAV and an ML classifier, indicating it contains an exploit. The presence of embedded JavaScript, detected by PDF_JAVASCRIPT and PDF_JS heuristics, suggests the exploit likely leverages this script to execute arbitrary code. The specific ClamAV detection name 'Pdf.Exploit.Agent-36121' is included as a primary IOC.

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
bd43cbc708ff36e083bce98e298b297f36b94cbdc7e53abd746d8b2bb3090b8c		 pdf-javascript-stream PDF /JS object 7 at offset 0x9C5 465 bytes

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