Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3d267d05e60ff62…

MALICIOUS

PDF

44.9 KB
MD5: aa4381c3f04cae2271b9c61ae7390bbe SHA-1: a1ea1c65019c2ce1cb24e17dae31a37b95d8e729 SHA-256: d3d267d05e60ff6260e86aa0205e9a891d996eb300baffee0abf069841bf3ef2
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' further suggests malicious intent. While the document body is unreadable and no specific malicious script actions can be confirmed due to obfuscation, the presence of JavaScript within a PDF is a strong indicator of an exploit attempt. The embedded URLs are related to XFA forms, which are known to be targeted by exploits.

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
73ce5d29264a0ae20fea1aa000d6b7a093e9a7b7e62f9f228d113d65288fcd8c		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1DE 3278 bytes

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