Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce145c267fa7433…

MALICIOUS

PDF

553.2 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: c109dd2764d82a26de4188717d0f3c08 SHA-1: cfebc2a78a656c0e7a7200c9a0b3c6a4c04942c1 SHA-256: 0ce145c267fa7433de49e74b3f0dd551ce2b17808facfb7d212165be5d67b947
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as malicious by ClamAV and an ML classifier, with critical heuristics indicating it's a PDF dropper containing embedded files and remote GoTo actions. The embedded artifacts and the 'Pdf.Dropper.Agent-7228011-0' detection name strongly suggest the file's purpose is to download and execute further malicious payloads, likely exploiting vulnerabilities for client execution.

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-7228011-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7228011-0
  • 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
cosmos_jupiter_289.pdf
d475c9cba1423e7baff31e7cc6107deba827420bbe6c50c9305c98ff85b8b4ee		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9F1 224099 bytes
cosmos_jupiter_289_1.pdf
0192013f2103e4838c46f2222281cd38bc2f9c3122e3990c5b64d81e2e3c167f		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9F1 310588 bytes
cosmos_jupiter_289_2.pdf
593fb4dfd2c28153aa41626c563ea986c2e4fccf29c7272a13e7c2f71be29331		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9F1 397040 bytes
stream_019_off0001a021.bin
b4ce74fda69964447c9cc1d3bf02a4cfc1e9e6884cbf2d8cf1355ef18fe73e97		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1A021 483574 bytes
objstm_0121_00.bin
39f7904e2a119a06a09343eb3ddd59db7362a0a62fc3b4075c03ceecdc411d43		 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

Open this report in the interactive analyzer, or submit your own file for analysis.