PDF malware analysis — malicious · 45865cba618a78b4

MALICIOUS

PDF

13.4 KB

MD5: 05a07ec9dbf7512d15d53acf5686edce SHA-1: 6e73802e309aa38b2aec024119a73bd4325ac955 SHA-256: 45865cba618a78b43f6f2d84d6ff16f8fdbe593195dd8d07a5465244b5b80a40

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. The presence of an embedded file and an embedded script payload suggests it is designed to execute malicious code or exploit vulnerabilities upon opening. The embedded URLs, while not directly malicious, are part of the PDF's structure.

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` `9ea4933daec26e297ac389953be7648f869bca0cd4c3dfea0b0a513349a3273f`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	13022 bytes

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