Malicious PDF — malware analysis report

Static analysis result for SHA-256 a976c902037c0b83…

MALICIOUS

PDF

6.6 KB Authoring application: Tisilarehaue (via f1d98Tibedegabala)
MD5: 27ba74b72d43813d46eed7df9c21abf0 SHA-1: a81bd0155ad0a421bb998948b633182cda22e048 SHA-256: a976c902037c0b834bf25d6b1ca3c8a7ca94b93c32b2803452d9941b43fb2224
76 Risk Score

Malware Insights

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

The critical ClamAV heuristic 'Pdf.Exploit.Agent-36142' strongly indicates a known PDF exploit. The presence of embedded JavaScript, identified by 'PDF_JAVASCRIPT' and 'PDF_JS' heuristics, confirms the mechanism for executing malicious code. This JavaScript is likely responsible for downloading and executing a secondary payload, a common technique for initial access.

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36142 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36142
  • 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_obj0010_000.js
d4dce4f95f7146e3b127d68edf45ceb045483a205d9e9a2a53d6e6b80d83b663		 pdf-javascript-stream PDF /JS object 10 at offset 0x1230 1728 bytes

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