Malicious PDF — malware analysis report

Static analysis result for SHA-256 79be50dda8d55ea2…

MALICIOUS

PDF

553.3 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: c9b1b1cec417b4ce24b6343cd8a4fab8 SHA-1: d0602924ce5926d6c30172d85107b3977a71aed3 SHA-256: 79be50dda8d55ea25a4be0fa33ef7d25ccc0117ef38626f39cebf7694f1348b0
100 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains embedded files and a remote GoTo action, indicating an attempt to deliver a secondary payload. The ML classifier strongly suggests maliciousness. The presence of embedded PDF files points to a multi-stage attack, likely involving the execution of downloaded content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8662

Heuristics 4

  • 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.
  • 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
magellanic_uranus_692.pdf
49d93db396684363a62703ef4a3931296264ed4fda0fc67e0c50403c40c68324		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9FA 224147 bytes
magellanic_uranus_692_1.pdf
a65c96e64ee523380b239126001aeaa93b312f2c05ad79771779207861e11855		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9FA 310647 bytes
magellanic_uranus_692_2.pdf
5f8d91cb540aa67cc1d3048806bdac8d9e511490a504dee7ee4384c910a65dcb		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9FA 397092 bytes
objstm_0121_00.bin
04fa2bd1f11ab334bc5a78556e915b689ef524bf0cdaacf302dba80a84d9962e		 pdf-objstm-decoded PDF /ObjStm 121 0 obj (inflated) 1129 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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