Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c898e1b7c67d70…

MALICIOUS

PDF

13.5 KB Authoring application: Cohbzomobkija
MD5: 20e335adbfd0dcc44f98f2945204f1ed SHA-1: cadb758ee4a2d09d06659870a2220ac815c32f1a SHA-256: b0c898e1b7c67d70771a808f4bbaaaf40cda89c23475703253f6b0c6cf407dc5
108 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript

The PDF contains embedded JavaScript, as indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a dropper. The embedded JavaScript is likely responsible for executing the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7293834-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7293834-0
  • 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_obj0022_000.js
33a262c54dcad1f989e0a0c1363bef472ece5219d9aae9dd722c11c6370a2948		 pdf-javascript-stream PDF /JS object 22 at offset 0x2B69 38541 bytes

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