PDF malware analysis — malicious · 75f041e39bee2c00

MALICIOUS

PDF

553.5 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: bc725ed906ba976de8290359317f9cdc SHA-1: 6507c9f7ce6e6abc2140066826cf77ea26726f38 SHA-256: 75f041e39bee2c007740caac6fa6a3e8014964d90f41bbca382bcc89df91ca99

100 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell T1105 Ingress Tool Transfer

The PDF contains embedded files and a remote GoTo action, indicating an attempt to redirect the user or download additional content. The ML classifier strongly suggests malicious intent. The embedded artifacts and heuristic firings point towards a downloader or exploit delivery mechanism, likely aiming to fetch and execute a second-stage payload.

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 9

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`andromeda_neptune_673.pdf` `83d7416f7c7301f238f4e0272d83c3af25788b013c351a2ce5ba910043b79eb3`	pdf-embedded-file	PDF EmbeddedFile object 244 at offset 0x1A9FA	224371 bytes
`andromeda_neptune_673_1.pdf` `7f37c0c4f98b7aca0c88a8ea24ca6fbeda7533c0e5962ef8b543a5f1af903974`	pdf-embedded-file	PDF EmbeddedFile object 244 at offset 0x1A9FA	310875 bytes
`andromeda_neptune_673_2.pdf` `0b00f28ef89d4f202159c698010a8fa3ff678b68212eb9b6c54a8bd423d88fd6`	pdf-embedded-file	PDF EmbeddedFile object 244 at offset 0x1A9FA	397343 bytes
`stream_019_off0001a023.bin` `239d316bbcec5904327bacdaf1719f0e8c982e20d83fcd7cef4a887948fd0ea4`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1A023	483886 bytes
`objstm_0121_00.bin` `9ed6da47923c10f83573d8ed91d6a2d8a3d49113d521ee4ef3fc6019daa6ebc8`	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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