Malicious PDF — malware analysis report

Static analysis result for SHA-256 43c60d5d70da3806…

MALICIOUS

PDF

138.0 KB Created: 2009-12-21 16:55:35 +08:00 Authoring application: Acrobat PDFMaker 7.0ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿcer(Acrobat Distiller 7.0 (Windows) (via Acrobat Distiller 7.0 (Windows))
MD5: 76ed3627be8eb436c16e77b2bfddbe3b SHA-1: 205123fc0079a30029004462af73a4da8d427710 SHA-256: 43c60d5d70da380694d1f8b20b5faf4487c3b1335bc477641a377aec33062abd
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript T1566.002 Spearphishing Attachment

The file is a PDF containing embedded JavaScript, as indicated by multiple heuristic firings. ClamAV detection as 'Pdf.Exploit.Agent-20022' strongly suggests exploitation of a known PDF vulnerability. The embedded JavaScript is the likely mechanism for delivering a secondary payload, although its specific actions are not detailed in the provided evidence. The benign URLs are standard PDF metadata namespaces and do not indicate malicious activity.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-20022 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-20022
  • 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 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/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/pdfx/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/photoshop/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0043_000.js
6a4feff50242ca48bccb7b8303874c63d44c492cea43499d20ce94d354dc031d		 pdf-javascript-stream PDF /JS object 43 at offset 0x2430 2172 bytes

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