Malicious PDF — malware analysis report

Static analysis result for SHA-256 c57b21c91ff4f6a8…

MALICIOUS

PDF

12.5 KB
MD5: 81fc03ff2273d7a2eb6855ff68262a79 SHA-1: bd950dff1c395a95b81d0d900f17c316eb613ec8 SHA-256: c57b21c91ff4f6a85e7c4163f71ce44db7dd5969ce6c8a9f8d33c23ec44cd83d
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript

The PDF contains embedded JavaScript, indicated by multiple heuristic firings and the presence of a large JavaScript stream. ClamAV detection as 'Win.Trojan.Agent-36281' strongly suggests malicious intent. The embedded JavaScript is likely responsible for the malicious behavior, potentially downloading or executing a secondary payload.

Heuristics 3

  • ClamAV: Win.Trojan.Agent-36281 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Agent-36281
  • 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_obj0076_000.js
6e781eaead59d4c552836bcf9bb6f835b6c8a6c8280fbc4c8760dc5cd41faf1a		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11722 bytes

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