Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1ec573cd0c3d011…

MALICIOUS

PDF

9.9 KB
MD5: 044be9df6ad03d8f8355692cb444883f SHA-1: 2e4849fe031d4c07d5897c42269c56a24b12b685 SHA-256: b1ec573cd0c3d01168e2c4019076d9347a2f6c739b01e5b3adcd442f929dc977
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a high-severity ML classifier and a critical ClamAV detection for 'Pdf.Dropper.Agent-1828888'. The presence of embedded JavaScript, indicated by 'PDF_JAVASCRIPT' and 'PDF_JS' firings, suggests the script is responsible for the malicious behavior. While the script content itself was not detailed, its presence within a dropper-type PDF strongly implies it's designed to download and execute a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-1828888 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-1828888
  • 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_obj0069_000.js
b3e0d084064cfd51342cef5e6ad5703ba9943609319d878f7e5b01ce87c9a552		 pdf-javascript-stream PDF /JS object 69 at offset 0x1BE 21259 bytes

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