Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb2b10d3566c1e82…

MALICIOUS

PDF

10.3 KB
MD5: 7819b651c5d192caba1b9e2ca1dfd9b3 SHA-1: 3f95ee32208729feb8d13094c2438656dfa93620 SHA-256: cb2b10d3566c1e8211ffa56db9df1781a6f10d2e55b20649e6cf6aa1062a35ee
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the 'PDF_JAVASCRIPT' and 'PDF_JS' heuristics. ClamAV detection as 'Pdf.Dropper.Agent-1828965' further confirms its malicious nature. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, which is a common technique for initial access or malware distribution. The document body was unreadable, so the rationale is based on the heuristics and the ClamAV signature.

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-1828965 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-1828965
  • 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_obj0035_000.js
204573a5b0e306dba3d46b26df089eddb95e1c594fda32a665f5922a33d1f89e		 pdf-javascript-stream PDF /JS object 35 at offset 0x17E 22407 bytes

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