Malicious PDF — malware analysis report

Static analysis result for SHA-256 777a0acb130d6e6c…

MALICIOUS

PDF

3.3 KB
MD5: 2a3fd2662b1ba75d5bec38d61ac71cc8 SHA-1: f4be6f35318fb0115ad1267706cd260c270885c8 SHA-256: 777a0acb130d6e6cf26315c0fed2f026f0348bac43d760185dd4b4eaca9e656e
108 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Agent-36121' and a high ML classifier score. Embedded JavaScript was also detected, indicating an attempt to execute malicious code. The ML classifier's high confidence suggests a sophisticated exploit, likely aimed at delivering a second-stage payload.

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
2b99bcd23836213c1d19071c14e21a1ce55e4e2153466e2a372a4200bab05c87		 pdf-javascript-stream PDF /JS object 7 at offset 0xA87 346 bytes

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