PDF malware analysis — malicious · 7a4bad2cf197e781

MALICIOUS

PDF

13.1 KB

MD5: fa008e878359a03264aa35ef3cf5a619 SHA-1: ad3fd2a43d795f4cad667923491be5ea656a31d1 SHA-256: 7a4bad2cf197e781258d4764115e78618aa299a8d5e570e80d90a3fb1ea2fcf7

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution

The PDF file contains an embedded script payload, indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. The ML classifier strongly flags this PDF as malicious. The embedded file 'embedded_file_obj0008.bin' is likely the delivered payload. The document body appears to be obfuscated JavaScript, suggesting an attempt to execute malicious code upon opening.

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/xci/
- 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` `71d92fd9120af114c7b4dd65f17d3bc9983d767b9029075f997a9050f1a37e57`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xD5	12637 bytes

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