PDF malware analysis — malicious · 694dfc12e2678d94

MALICIOUS

PDF

160.0 KB Authoring application: Python PDF Library 055 http072057057pybrary056net057pyPdf057

MD5: 63ae76d453bbea763386a680d7e0c879 SHA-1: fb5d925fb317ff7eeab37de25bc226716ac208d1 SHA-256: 694dfc12e2678d946cad87a571a6a144772f625f98d6a8da5b6efd6cdef8f59a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a RichMedia (Flash) object, indicating an attempt to exploit vulnerabilities. The ML classifier strongly flags this PDF as malicious. The presence of embedded JavaScript suggests an attempt to download and execute a second-stage payload, a common technique for malware delivery.

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` `77883d5f6192245124c612c3ca69d82011b8de4195fa7463196c4228bbd3a188`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0xB4F	772 bytes
`polyglot_child_pdf_off00026792.pdf` `502afc092bd8ffb3cd05d9ae5fb566dd30e5f67317e2234b589514ed8a6eb9e3`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x26792	6297 bytes

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