Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa95cda0752b0ca7…

MALICIOUS

PDF

10.5 KB
MD5: e146b9d384d1e6fe17d29e96011b8d3b SHA-1: f0f91ff5107be941fbf9deaafb19772ff34ea55e SHA-256: fa95cda0752b0ca7736fc80e3112ba4d3f1e19175f277b2360d76e594c800e37
108 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Dropper.Agent-9449053-0' and a high ML score. The presence of embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics, suggests the document is designed to execute malicious code. The ML classifier's high confidence score further supports the malicious nature of the file. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-9449053-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9449053-0
  • 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
ccc54e0ca5f01c551d0e701fb84e94020a93f29362cec36ca29aa84264f670e5		 pdf-javascript-stream PDF /JS object 44 at offset 0x14C 27838 bytes

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