PDF malware analysis — malicious · edc98fdc74d8d979

MALICIOUS

PDF

12.0 KB

MD5: a3836fdce88f896aceea196a6b266c4c SHA-1: f8f7f025299b97f9896d32923546b975aeebfa45 SHA-256: edc98fdc74d8d979324f537591f7195ed24ac6a043e1369c993b44c7bd6bc648

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

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 artifact, 'embedded_file_obj0008.bin', is likely the delivered payload. The document body contains JavaScript-like syntax, suggesting an attempt to obfuscate or directly embed executable code.

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` `5ab7fc12651d7718c9d17846c6f0eb1a4b99d7a268f407b67d48c3baf95730bb`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	11611 bytes

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