PDF malware analysis — malicious · 80dc966b260d768e

MALICIOUS

PDF

13.5 KB

MD5: 39903c08c178d4b158cf8d61c52e7991 SHA-1: c4e77421754935389eed6d51927b54bc1993b610 SHA-256: 80dc966b260d768ee68d14f4ca7446a1b902c5ffc7d8abf8e53b0aa2e4cdfaaa

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1566.002 Phishing: Spearphishing Attachment

The ML classifier strongly indicates this PDF is malicious. It contains an embedded script payload and an embedded file, suggesting it is designed to deliver a secondary exploit or malware. The presence of XFA form elements and embedded URLs, while not inherently malicious, are common vectors in PDF-based attacks. No specific family could be identified from the available evidence.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
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://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `6f089faa8212621aead5b67f98ffc6a7decfcae43d76a71c9ad62b022f6cab34`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	13097 bytes

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