Malicious PDF — malware analysis report

Static analysis result for SHA-256 a112dcc31dd58d13…

MALICIOUS

PDF

45.5 KB
MD5: 42ea06b7a378b8e5008ff930200538e6 SHA-1: 50f4341d98cb6b4aa2cf7c48a0ebfa3a64384e49 SHA-256: a112dcc31dd58d134b5526d3c1baff23b5384f0a015a39b7ede9825deb4dfdc4
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file exhibits multiple heuristic firings related to JavaScript and XFA forms, with a critical ClamAV detection for obfuscated objects. While the document body is unreadable, the presence of embedded JavaScript suggests an attempt to execute malicious code. The embedded URLs, though mostly unknown or benign, are included as potential indicators. The obfuscated nature of the JavaScript and the lack of clear indicators for a specific family lead to a moderate confidence score.

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
5021282a2741906d4e3ba8e76d5a65fc24e8d8feffdd04132907d80d022a09b6		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1FE 3755 bytes

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