Malicious PDF — malware analysis report

Static analysis result for SHA-256 515fa7347d2cf5d0…

MALICIOUS

PDF

3.3 KB
MD5: 197b1afbc23d12cb916908b7b89dcddf SHA-1: 8d412784fbf46066359789da460893598b030336 SHA-256: 515fa7347d2cf5d09d666ecf1d78a53a3d03c1735af9972fe67e81648731a208
106 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Exploit.Agent-36121 and a machine learning classifier indicated a high probability of maliciousness. Heuristics indicate the presence of embedded JavaScript, which is likely responsible for the exploit. The embedded JavaScript is expected to download and execute 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
28f8337f245eaf123cf50160b5eab979adf506e2c711e9ca8d2b7b935a72ef4b		 pdf-javascript-stream PDF /JS object 7 at offset 0xA87 343 bytes

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