PDF malware analysis — malicious · b580a7f9ca8cad6b

MALICIOUS

PDF

138.6 KB Authoring application: Python PDF Library 055 http072057057pybrary056net057pyPdf057

MD5: ea113fe002af6e6b3d67c08b9b669876 SHA-1: 9eeebda158f73382bb9526fea1b65b57e06acb46 SHA-256: b580a7f9ca8cad6bb657160f7d89f5fbba799e781e38bb7cf12782689634a0e3

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File T1059.001 PowerShell

This PDF contains embedded JavaScript and a RichMedia (Flash) object, indicating an attempt to exploit vulnerabilities. A secondary embedded PDF was also detected, which itself contains suspicious static findings including JavaScript, embedded files, and RichMedia. This suggests a multi-stage attack where the initial PDF serves as a dropper for the secondary PDF, likely to execute further malicious code or download additional payloads. The presence of these elements strongly points towards a malicious intent, likely for exploitation.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGE

A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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://adobe.com/AS3/2006/builtin

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`pushpro.swf` `5e8b92090afc1d9f8b703028aa20e64debf63c74b6db09f92633790c303e679f`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0xB4F	772 bytes
`polyglot_child_pdf_off000211eb.pdf` `792fa1dbdc5b734b2a0b33bbf882d15c727a29c4f23671fb6c2a54c6eb0952b9`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x211EB	6297 bytes

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