Malicious PDF — malware analysis report

Static analysis result for SHA-256 205521ed9a2627c7…

MALICIOUS

PDF

553.6 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: bef70a1655f070811a5573a0d313c332 SHA-1: 8e786e2c145b655ec4ab0c9ac0001b74d47c1c05 SHA-256: 205521ed9a2627c788daca5012a41cbb514eb6b64c589d2c9bd72d2c3dff7f12
100 Risk Score

Malware Insights

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

The PDF file exhibits suspicious characteristics, including embedded files and remote GoTo actions, which are often used to redirect users to malicious sites or download additional payloads. The ML classifier also flagged this PDF as malicious. The presence of multiple embedded PDF files suggests a multi-stage attack or a complex lure.

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
cartwheel_uranus_625.pdf
f917ca73f138e03aea0301ea66f06fbc5862592e5d637a4040b1a42eb8d76994		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9F7 224397 bytes
cartwheel_uranus_625_1.pdf
a5963a94688d74b7e631ebada7bdf0a07745258667cdb59a61119bb52ef6d41d		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9F7 310923 bytes
cartwheel_uranus_625_2.pdf
1377e3454a675c7dc8375f9ec84c09df239641850100cc2247209f3ef7195f0e		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9F7 397393 bytes
objstm_0121_00.bin
323dcb6f5e8f7e77eeb2d957b86d4ed358739585edf425f4c21048db479c1a50		 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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