Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec458e6be4a18aea…

MALICIOUS

PDF

3.3 KB
MD5: df3fc2590c2280d90ef7516974675ba4 SHA-1: 1b0d845b9290154bca0800f8e56ff6f0a9dfc65d SHA-256: ec458e6be4a18aeab7ad841a22805a2570d250c9ff8967ce45a22f177a050f18
108 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, specifically detecting 'Pdf.Exploit.Agent-36121'. It contains embedded JavaScript, indicating an attempt to exploit a vulnerability within the PDF reader to execute malicious code. The JavaScript is likely responsible for downloading and executing a secondary 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
1c39e10bf8fe7fb8d36e43abba86e339afbe35f045925110a1c7ddef43fdc55c		 pdf-javascript-stream PDF /JS object 7 at offset 0xA88 334 bytes

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