Malicious PDF — malware analysis report

Static analysis result for SHA-256 890d2472d7e1f721…

MALICIOUS

PDF

10.7 KB
MD5: c70fefececdee4aa192a539b888a6f9a SHA-1: 0ad82ece5f1f886b1fb34dc479a1c86fe90e533a SHA-256: 890d2472d7e1f72170ec2cf066cd553f76fa5dff7790a6624970e412fa7121a3
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Dropper.Agent-5343085-0'. The presence of embedded JavaScript, indicated by 'PDF_JAVASCRIPT' and 'PDF_JS' heuristics, suggests the document is designed to execute malicious code. The large embedded JavaScript stream likely contains the mechanism for downloading and executing a second-stage payload, which is a common dropper behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-5343085-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-5343085-0
  • 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
4e52dfcec996f7b9f5eba751978559687fa290fbe43d02b0a34f2dea319837f8		 pdf-javascript-stream PDF /JS object 44 at offset 0x14C 28870 bytes

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