Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5dfe724efdbb21…

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: 60d3d8535add714655fa54818fac732c SHA-1: c0b74c1c045b008b7bf6913bb07b5bce0f3e0c80 SHA-256: fa5dfe724efdbb2114291dd3da8231a91463eac83a19139383fa2cc2e115a811
160 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics, including ML classification and ClamAV detection as 'Pdf.Dropper.Agent-7326900-0'. The presence of embedded files and remote GoTo actions suggests it is designed to download and execute additional malicious content. The ML classifier output of 0.866221 further supports its malicious nature.

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-7326900-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7326900-0
  • 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
magellanic_jupiter_840.pdf
48c46d94ecd69d0ddfd762b438457db10d09052767ce358a828fefc3185c50ac		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9FD 224401 bytes
magellanic_jupiter_840_1.pdf
1c3a099170cd1a3d685c798bf1d4dce2d67b4d64369ef72bab97bcb535fec1fd		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9FD 310922 bytes
magellanic_jupiter_840_2.pdf
8ada92da6982a9d1821dfde18f1befd282a7e07b512b769cd7b4ead107c75405		 pdf-embedded-file PDF EmbeddedFile object 244 at offset 0x1A9FD 397385 bytes
stream_019_off0001a027.bin
d78e6e97199ade413dbd757ba43e4fb09dd54865cd292c152ddccfc766eb8441		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1A027 483920 bytes
objstm_0121_00.bin
72812ad0b968810dd350f0c7fb1cd4f64ef9559e14292a7088d63b431ff1f95f		 pdf-objstm-decoded PDF /ObjStm 121 0 obj (inflated) 1133 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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