Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ae6d09bb5615549…

MALICIOUS

PDF

9.8 KB
MD5: c210a75be2a5c05388194548f85b1472 SHA-1: 3362045e210229fcb78438746a6ececee940e9c4 SHA-256: 0ae6d09bb5615549047a84ce26ad1520247c442a2d13c46cc81c14c62f64edc5
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, identified by multiple heuristics and ClamAV detection as a dropper. The JavaScript is obfuscated but likely responsible for downloading and executing a secondary payload, indicated by the 'ML_NYX_PDF_MALICIOUS' and 'ClamAV: Pdf.Dropper.Agent-7227091-0' firings. This suggests a common attack pattern involving a malicious attachment used for initial compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7227091-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7227091-0
  • 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_obj0069_000.js
b06006e43b835b2ec39de70684c7f45d338ea0a7ab7a40f34c55e92041c0d513		 pdf-javascript-stream PDF /JS object 69 at offset 0x1BE 21462 bytes

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