Malicious PDF — malware analysis report

Static analysis result for SHA-256 391a28ef629fefd8…

MALICIOUS

PDF

7.6 KB Created: 2010-05-20 22:10:31 Authoring application: Qouwacac de
MD5: 759bada7a19c735fe40ca1b702bf25b4 SHA-1: edbde19f80add54df24d7d9693f96bd4439c5a2a SHA-256: 391a28ef629fefd82b725640e1d4834717eb4bb73057343ea874e5e8403ec6c4
106 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV and a machine learning classifier. Heuristics indicate the presence of embedded JavaScript, suggesting an attempt to exploit PDF vulnerabilities. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, as indicated by the 'Pdf.Dropper.Agent' detection name.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7250213-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7250213-0
  • 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_obj0013_000.js
a171b04b5854d29e60974546732cf32ec366037f3c3c458af085380312ff8427		 pdf-javascript-stream PDF /JS object 13 at offset 0x1370 3380 bytes

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