Malicious PDF — malware analysis report

Static analysis result for SHA-256 455b67092c4e2054…

MALICIOUS

PDF

44.9 KB
MD5: ab40f2acd9c787263428333e206aa967 SHA-1: eba7761525df9b8cc20422ae5def74b9e6ec26a4 SHA-256: 455b67092c4e205481c0a31064cdd2dbb76a434ac21052b642f23442d88d3a18
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

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 largely unreadable, the presence of JavaScript points to an attempt to execute code, likely for downloading a secondary payload. The embedded URLs are not directly indicative of malicious activity but are part of the document's structure.

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
83c16362dd09e0c35b855fab738b6abdc2430f7bba62bcba417dc403fd6b2721		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1EB 3336 bytes

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