Malicious PDF — malware analysis report

Static analysis result for SHA-256 16de3e0f8411fb07…

MALICIOUS

PDF

11.3 KB
MD5: ee1eb43d4178793bdc8c860979b2620a SHA-1: 378eb005074b497c5b23c99bfdbb3c2f092bda40 SHA-256: 16de3e0f8411fb07de506e2ffc80c2edc09affcb509c56af098eb22c43b481c1
106 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains embedded JavaScript which is likely responsible for downloading and executing a secondary payload, as indicated by the 'Pdf.Dropper.Agent-7685757-0' detection name. The JavaScript itself is heavily obfuscated, preventing a more detailed analysis of its specific actions.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7685757-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7685757-0
  • 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
c8e38b64240163119547e5c216af29eefe07e9e043f75175c406d12d9c648b7f		 pdf-javascript-stream PDF /JS object 45 at offset 0x193 27919 bytes

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