Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d3c768a9685f82…

MALICIOUS

PDF

45.9 KB
MD5: 908d1acde59bd53a098093d984f95a82 SHA-1: a659ca43ce99d0c98338d75482237d72b7b284d3 SHA-256: c5d3c768a9685f82a89157c6deb7272d61b6c208431f3a7592ae189cd7efcb8f
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file exhibits multiple heuristic firings related to JavaScript and XFA forms, indicating a high likelihood of malicious intent. The embedded JavaScript stream is a common technique for delivering exploits or downloading secondary payloads. While the document body is unreadable, the presence of obfuscated JavaScript and the ClamAV detection for 'Heuristics.PDF.ObfuscatedNameObject' strongly suggest this PDF is designed to be malicious, likely by executing embedded scripts.

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
78fdabb1c026054711fe5c9c713a3bc64962a9e1757b9b43d729a47a27895452		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1EF 4280 bytes

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