Malicious PDF — malware analysis report

Static analysis result for SHA-256 0412a528f83e0ac4…

MALICIOUS

PDF

4.0 KB Authoring application: sli
MD5: acd957c88ddbc4b4c7d2150df5cb52f3 SHA-1: d7817804266579a4b2ba6d04d151ecebac947f4e SHA-256: 0412a528f83e0ac41a5f15aa7a2a1d1a6e4c5e00d003885a21650b4289116dfd
106 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple engines, including ClamAV which identified it as Pdf.Exploit.Dropped-91. Static analysis revealed embedded JavaScript actions and streams, indicating an attempt to exploit a vulnerability for client execution. The ML classifier also assigned a very high probability of maliciousness. The embedded JavaScript is likely responsible for downloading and executing a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Exploit.Dropped-91 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-91
  • 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.

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