Malicious PDF — malware analysis report

Static analysis result for SHA-256 704869d1812f97c7…

MALICIOUS

PDF

3.3 KB
MD5: b098c23a75968971978407317f64b7c2 SHA-1: e9cd7a6de97ba419c5330e81a86cf02af7f2bf76 SHA-256: 704869d1812f97c71d6bb5219e44cd029189550b0c65a438d16c8c13e18b3c23
106 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript that is obfuscated. The script decodes a string from the PDF's title field and executes it. This behavior is indicative of a PDF exploit attempting to download and execute a second-stage payload, as suggested by the ClamAV detection and ML classifier.

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
c69e455a48fd83b27218274079ae1fa1bf42ddce64e70364b5ba22d9e7671150		 pdf-javascript-stream PDF /JS object 7 at offset 0xA81 368 bytes

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