Malicious PDF — malware analysis report

Static analysis result for SHA-256 03863efabbb6bad0…

MALICIOUS

PDF

3.3 KB
MD5: e26c5621bc1e35a152f4f8872f9994cf SHA-1: a6894c299b2e3c435d402d20b7ffe1bf3776f3a9 SHA-256: 03863efabbb6bad0626df3fc9c1477bb603a013a27b91f713e982718e612a318
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 ClamAV as Pdf.Exploit.Agent-36121. The JavaScript code appears to be obfuscated but is designed to be executed, likely to exploit a vulnerability within the PDF reader. This execution is intended to download and run a second-stage payload.

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
3e3aeb4c89ff6aa1f645afc011132d0ab0b79319932fbd9fcd25e1b69f40c2b4		 pdf-javascript-stream PDF /JS object 7 at offset 0xA82 299 bytes

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