Malicious PDF — malware analysis report

Static analysis result for SHA-256 effd09ab92e5facc…

MALICIOUS

PDF

3.2 KB
MD5: ffda220c736fa53697ebbf8cfe70e335 SHA-1: cc3df6680c42389394dbd51e8118078c300347de SHA-256: effd09ab92e5faccd9308cb934fdc5b49cf52ed9f7c190c246f5af7eb5a98fe9
106 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Agent-36121'. Static analysis revealed embedded JavaScript, indicating an attempt to exploit a vulnerability within the PDF reader. The ML classifier also strongly indicated maliciousness. The exact exploit mechanism and payload are not detailed, but the presence of JavaScript points to code execution.

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
9e0a37de97720bf079014c6e5f4dce9fa0117e4823637d3e747c5160f9a322ee		 pdf-javascript-stream PDF /JS object 7 at offset 0x9C9 470 bytes

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