Malicious PDF — malware analysis report

Static analysis result for SHA-256 f15265869b006ad5…

MALICIOUS

PDF

359.0 KB Created: 2010-03-16 22:56:45 +08:00 Authoring application: Adobe InDesign CS3 (5.0.4) (via Adobe PDF Library 8.0)
MD5: dc4b0c4538f7a400a7d044975da74b33 SHA-1: b410e2d16dcf945400dbe4e7d530379298d263bd SHA-256: f15265869b006ad5bddd46fee4fef71b9908a22dd98df4f026f2866a325f7626
76 Risk Score

Malware Insights

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

The critical ClamAV detection of 'Pdf.Exploit.Agent-19686' strongly indicates a known PDF exploit. The presence of a PDF AcroForm button with an action trigger and an embedded URI further supports the likelihood of a malicious PDF designed to exploit vulnerabilities. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0002

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-19686 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-19686
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • External URI low PDF_URI
    PDF contains an external URL action
  • 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/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/g/img/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000e8e.bin
edba0438047a1564a5f047c683be494f5aee11c3b035239db9a2e1c612bd8f70		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E 29952 bytes
font_01_sfnt_off000471f1.bin
17eeb41b4fe40ff1ca955cba0224970d9dd90cef2331a395f32a3bfecfc3356a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x471F1 35105 bytes
font_02_sfnt_off0004b561.bin
bde1fecca0d26371713f2b2e1b79c3537b3694dadf7d7bc1052bebaacc2d905a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B561 10997 bytes

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