Malicious PDF — malware analysis report

Static analysis result for SHA-256 311e5206a2871092…

MALICIOUS

PDF

827.1 KB
MD5: c9eeb2eed6b610975dba942009922cd6 SHA-1: 3a957c596117fd8ee8c7d1e6bdd189a05b25d977 SHA-256: 311e5206a2871092ffe1d030f3037021520177059b7acb1379f9c6111b5d646d
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection for 'Heuristics.PDF.ObfuscatedNameObject' further suggests malicious intent through obfuscation. While the document body is unreadable, the presence of JavaScript and the XFA form type point towards a potential exploit or payload delivery mechanism. The embedded URLs are related to XFA schemas and do not appear to be directly malicious, but their presence within an obfuscated PDF warrants suspicion.

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://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
c4ba3591c3074e8fbc2f51681f2267ae4d6650196a96437268cf3aa864f515e3		 pdf-javascript-stream PDF /JS object 12 at offset 0xCE04A 5835 bytes

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