Malicious PDF — malware analysis report

Static analysis result for SHA-256 22d0ded3f9580ed5…

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: 01d7f4f62241e661db12ed18707eff06 SHA-1: 5c73d76a76d956a135b1437271484bd8b266f3ab SHA-256: 22d0ded3f9580ed528756530c8350ad15302bc2e475fe40fbba4b4b34d794a94
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by ClamAV as 'Pdf.Dropper.Agent-7239117-0', indicating it functions as a dropper. The 'PDF_EMBEDDED_CHILD_STATIC_TRIAGE' heuristic firing suggests the presence of suspicious embedded content, likely intended to deliver a secondary payload. The ML classifier also strongly indicated maliciousness. No specific document body text was available for analysis, but the embedded nature and dropper classification point to a malicious delivery mechanism.

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-7239117-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7239117-0
  • 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 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
mayall_jupiter_544.pdf
bf47d81156662359d4663415ec1015cd519e01bf41ae72b7b81833e28ce9fde2		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9F1 224136 bytes
mayall_jupiter_544_1.pdf
86e5eb1e8876e46b841f26a1daf5466dfa37afec0b810fc883a3795e680f2367		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9F1 310649 bytes
mayall_jupiter_544_2.pdf
2ff5f3edf97e8c0ee6312c866491bd331f67803e8cc76392243ad509fc42a410		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9F1 397109 bytes
stream_019_off0001a022.bin
519e579674bfdb00c013028a9b1ea51161a665cd9ea7dda8522b652267b95a9d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1A022 483644 bytes
objstm_0121_00.bin
37c31197c22e574db12b96b5c77b8e19a5f25369bcae19ec651164428af7f5a6		 pdf-objstm-decoded PDF /ObjStm 121 0 obj (inflated) 1120 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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