Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9505ed04deb5e19…

MALICIOUS

PDF

12.5 KB
MD5: 81c75a2edc7f9803c7c9fc2e97e9aa06 SHA-1: c4e9155fd20a3789827c32e492040c06e852c2f5 SHA-256: b9505ed04deb5e19a21472507d78380e624a4130ff05a00829814dbb680579ce
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings and the presence of a large JavaScript object. ClamAV detection as 'Pdf.Exploit.Agent-36722' strongly suggests exploitation of a known PDF vulnerability. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, a common technique for initial access.

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36722 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36722
  • 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_obj0076_000.js
c007e79e90b1c01526bb32c193633afcedb5b3db20fb1783f9b198af4dcca35c		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11703 bytes

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