Malicious PDF — malware analysis report

Static analysis result for SHA-256 929709e4db150022…

MALICIOUS

PDF

44.8 KB
MD5: bcb054e81e8a6d91c72faecd941e76c5 SHA-1: 5027b3c0ae1c76e274de52ddc7b988b539d12d38 SHA-256: 929709e4db150022f731890cc6ae69a7176482f1d36d24263b1c09d46a5ff391
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript T1566.001 Spearphishing Attachment

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, the presence of obfuscated JavaScript strongly implies an attempt to download and execute a secondary payload. The embedded URLs, though not directly malicious in reputation, are associated with the XFA form structure which is often abused for exploitation.

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
4175d649d17a5b590ea9139da4dce65e356813decad7ee0508f51e4bfb9bd523		 pdf-javascript-stream PDF /JS object 12 at offset 0xA202 3240 bytes

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