PDF malware analysis — malicious · 0d30912caca44d54

MALICIOUS

PDF

590.7 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: 8c84bd011184fd9e59c7e0576f3e8221 SHA-1: 2438fe2e0264f4decb354680e79b0e8bfc660889 SHA-256: 0d30912caca44d54b4838119fb5fbaef3eb13c0c191a0ef88b5caf37d936884c

162 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF was flagged as malicious by a machine learning classifier and ClamAV, identifying it as a dropper. It contains embedded files and a remote GoTo action, suggesting it's designed to execute further malicious code or redirect the user. The presence of embedded PDF children and suspicious static findings strongly indicates a multi-stage attack.

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-7228144-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7228144-0
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.

Filename	Kind	Source	Size
`cigar_mars_562.pdf` `73bb491041abb77bc4566eafdea769c18e984c46f3663ef1410b9fd2d1479a16`	pdf-embedded-file	PDF EmbeddedFile object 244 at offset 0x1A9E5	262455 bytes
`cigar_mars_562_1.pdf` `7e2f61e2f86e38863c6d2e0f65fe328d6aae41411b89212a9299c651205e2ed9`	pdf-embedded-file	PDF EmbeddedFile object 244 at offset 0x1A9E5	348929 bytes
`cigar_mars_562_2.pdf` `b8162162e214bf3b7a2e2cc7409165e8a234db88599b01a9b7bab5e81d545a7b`	pdf-embedded-file	PDF EmbeddedFile object 244 at offset 0x1A9E5	435448 bytes
`stream_019_off0001a01e.bin` `406d4752b0f71fd5b063d39b2da0f5e4e29cfa6dc391468725eb3953e4ccba56`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1A01E	522021 bytes
`objstm_0121_00.bin` `138de69268877ecbf855638a5dd9f96c093c36607a45ab9d3c4a774e29cb4bfc`	pdf-objstm-decoded	PDF /ObjStm 121 0 obj (inflated)	1108 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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