Malicious PDF — malware analysis report

Static analysis result for SHA-256 703f852b2015a09f…

MALICIOUS

PDF

11.7 KB
MD5: 22ec0dfdedfbcf84f58ab0e87fa336d0 SHA-1: e88a54425e65ff84d6a553668bb15d561403b523 SHA-256: 703f852b2015a09fe720fa48741c393e947296bae3b24b14f63241c91fe09be5
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 detected by ClamAV as a known dropper. The JavaScript is likely responsible for downloading and executing a secondary payload, a common technique for malware distribution. The ML classifier also strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7271244-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7271244-0
  • 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_obj0045_000.js
58f391970b6139a5299e58d11ddb25695f4aec6d6582ce6aef4aba6d239e2d0f		 pdf-javascript-stream PDF /JS object 45 at offset 0x193 27232 bytes

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