Malicious PDF — malware analysis report

Static analysis result for SHA-256 115bc409fff24561…

MALICIOUS

PDF

10.5 KB
MD5: b582a534c9719b441462ca72383d6770 SHA-1: 74bfeae47e9bfc530524736f9c65442c49943cef SHA-256: 115bc409fff24561af381fbc8de9d57be6942d43a697515465e2ce63bac45313
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, flagged by multiple heuristics, and is identified by ClamAV as a known dropper. The ML classifier also strongly indicates maliciousness. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, a common technique for this type of malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7230321-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7230321-0
  • 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_obj0044_000.js
b055de5491b7e436fdfb4590154b6ac7d9900fc9539a9e3c452b689a2d5a55f8		 pdf-javascript-stream PDF /JS object 44 at offset 0x14C 26646 bytes

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