Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b8b16806379313b…

MALICIOUS

PDF

11.5 KB
MD5: 3f7209a78fb33571bcbfa12081bc74e5 SHA-1: d2d6c66c7790e20378cfd9530b82e06155c26ffa SHA-256: 4b8b16806379313bf6ddf134c760c820354d2650ec57e79be17c02f83db586bf
78 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detection as 'Pdf.Dropper.Agent-7212194-0' strongly suggests malicious intent. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for dropper malware. The document body content was unreadable, but the presence of JavaScript and the ClamAV signature are sufficient for this assessment.

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-7212194-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7212194-0
  • 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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0045_000.js
5f8e3b97b563cb7147bd7b53b6405f7c9322a3ada118a289c032282cff974fd5		 pdf-javascript-stream PDF /JS object 45 at offset 0x193 27807 bytes

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