Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b63c81d4fcfb4d5…

MALICIOUS

PDF

591.0 KB Created: 2010-03-31 12:55:11 -04:00 Authoring application: Adobe InDesign CS4 (6.0.4) (via Adobe PDF Library 9.0)
MD5: 329a2f68f588898a6348863b230c5c0c SHA-1: 96e80ddd0a40e3ff90a0f2b8774c53fce5edc04e SHA-256: 3b63c81d4fcfb4d5e0ee66dce6c6a4e60ecdcc528f52659c2502a4a0c504d814
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter T1566 Phishing

The PDF file was flagged as malicious by ML classifiers and ClamAV with the signature 'Pdf.Dropper.Agent-7251350-0'. Static analysis revealed embedded PDF content and a remote GoTo action, indicating a potential exploit or redirection attempt. The presence of embedded files and suspicious static findings strongly suggests this PDF is designed to deliver a secondary malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8662

Heuristics 5

  • Embedded PDF child has suspicious static findings critical PDF_EMBEDDED_CHILD_STATIC_TRIAGE
    PDF contains an embedded PDF stream whose extracted child matches suspicious or malicious PDF heuristics. Wrapper PDFs are commonly used to hide the actual exploit or lure payload from scanners that do not recursively inspect attachments.
  • ClamAV: Pdf.Dropper.Agent-7251350-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7251350-0
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • Remote GoTo action info PDF_GOTO_REMOTE
    PDF has GoToR/GoToE actions that reference sibling document files — typical of multi-part document bundles
  • 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/
    • http://ns.adobe.com/xap/1.0/g/img/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/xap/1.0/sType/ManifestItem#
    • http://ns.adobe.com/xmp/InDesign/private
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/t/pg/
    • http://ns.adobe.com/xap/1.0/sType/Dimensions#
    • http://ns.adobe.com/xap/1.0/g/

Extracted artifacts 8

Files carved from inside the sample during analysis.

FilenameKindSourceSize
cartwheel_uranus_926.pdf
d0d0527152cfd36f10237aff2be71d913b91c6a099cd20f2b02e8a1f951f990e		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9F7 262778 bytes
cartwheel_uranus_926_1.pdf
821019dc59913a27981e26680369556191ff93ddafec5a7eace4d8bcb0bd8c56		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9F7 349247 bytes
cartwheel_uranus_926_2.pdf
f1df941f1d4c13309e312ee8f8aa8c5c39cd21f31cac7b57a0622424f8416a36		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9F7 435774 bytes
objstm_0121_00.bin
94dc8bf45efe030762c547adfe886b9236edb00f8455bb9585eaf448931318f1		 pdf-objstm-decoded PDF /ObjStm 121 0 obj (inflated) 1126 bytes
font_00_cff_off0000b46d.bin
38d7d0627d6ef08fdb595be75f8f12752f3381fa7a1441ca8f76a5e76dc6e7b9		 pdf-font-stream PDF embedded font (cff) at offset 0xB46D 609 bytes
font_01_cff_off0000ba3f.bin
5f3f348279f5218a0f3607c4a8e7c1b2190742072e04b58112191aa6b4235f52		 pdf-font-stream PDF embedded font (cff) at offset 0xBA3F 886 bytes
font_02_cff_off0000c1e7.bin
7e5cb310f6cb7822b8a316192e8347738bb3f1d76fe954bdbf17623d2e87f2fb		 pdf-font-stream PDF embedded font (cff) at offset 0xC1E7 3808 bytes
font_03_cff_off0000d457.bin
99bc093cddfa13f76f619bedeaf723ce24882a341f9686e35da3cad8dbab0a72		 pdf-font-stream PDF embedded font (cff) at offset 0xD457 3669 bytes

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