Malicious PDF — malware analysis report

Static analysis result for SHA-256 aca9f3934715e3b8…

MALICIOUS

PDF

110.4 KB Created: 2008-02-27 16:58:09 +08:00 Authoring application: PScript5.dll Version 5.2 (via Acrobat Distiller 6.0.1 (Windows))
MD5: 8656ad2f68ed04653f6e5e01fa007717 SHA-1: 803b12812e3febfbe86ad6c1a08c4c23cc093693 SHA-256: aca9f3934715e3b8acfbbdbc09d0af5764ae2cc1f8146990edf085ec18344211
92 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript T1204.002 Malicious File

This PDF file exhibits multiple indicators of malicious intent, including embedded JavaScript and an embedded file, as flagged by the heuristics. The ClamAV detection of 'Win.Trojan.Dropper-82' strongly suggests it functions as a dropper for further malware. The embedded JavaScript is likely used to exploit PDF reader vulnerabilities or to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Win.Trojan.Dropper-82 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Dropper-82
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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://www.w3.org/1999/xhtml
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/iX/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://purl.org/dc/elements/1.1/

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