Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f09b36e6bc457d5…

MALICIOUS

PDF

3.3 KB
MD5: 041ffd07108e8d1634ab4b479b592c1a SHA-1: d6d3dd8a5fa062d8b0c28c65331d87cd4ebbd04f SHA-256: 0f09b36e6bc457d5bcb0fd32db4983eb9c57de4851ef2d787493758657de7c20
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript, identified by heuristics and a critical ClamAV detection (Pdf.Exploit.Agent-36121). The JavaScript appears to be designed to extract and execute content, likely a second-stage payload, based on its structure and the PDF's malicious classification. The exploit is likely delivered via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36121 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36121
  • 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_obj0007_000.js
93e26acf251bc15ba24127120fd89052e473cb1b39be497ffa6471ed4812bcd1		 pdf-javascript-stream PDF /JS object 7 at offset 0xA87 330 bytes

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