Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ae4a67e42bbcbd…

MALICIOUS

PDF

45.0 KB
MD5: 421fe64e86eeaa0842a5b4ba128d7dd9 SHA-1: 808af6f1c22cacf9d4e51a1767017bd3466d85ae SHA-256: f6ae4a67e42bbcbd1121623e10ea23a822afd62442e948bd212f9e171a8590ad
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by heuristic firings like PDF_JAVASCRIPT and PDF_JS. The ClamAV detection for Heuristics.PDF.ObfuscatedNameObject further suggests malicious intent. While the document body is largely unreadable, the presence of JavaScript points towards an attempt to execute malicious code, likely for downloading and executing a second-stage payload. The embedded URLs are related to XFA forms, which are often exploited in PDF-based attacks.

Heuristics 5

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/2.6/
    • http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
ce5b3ee18e13cb12ef6680e9ed92618d83373de4e38dd04bfe82ab9f1966e8e4		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1F8 3464 bytes

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