PDF malware analysis — malicious · 4176afa1dbdaf311

MALICIOUS

PDF

12.9 KB

MD5: a5d03a6dcb4e6273b94a4c0728b69fff SHA-1: 16165119980df846551b69bd2f70c97fbb405d7d SHA-256: 4176afa1dbdaf3115f923177813b8592142ece2cf669276040d46a8e47df80b3

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The ML classifier strongly indicates this PDF is malicious. It contains embedded content and an embedded script payload, suggesting it's designed to execute malicious code or exploit a vulnerability. The presence of XFA form elements further supports its potential for exploitation. The embedded script is heavily obfuscated, making its exact function difficult to determine, but it likely attempts to download and execute a second-stage payload.

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_obj0009.bin` `0fc39caa6bccedf182d50c383ee57a922018ac687de6016847fce427e493719b`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0xD5	12443 bytes

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