PDF malware analysis — malicious · a629a57cc121202b

MALICIOUS

PDF

13.2 KB

MD5: 18b4ed5553604aa6209b1dd27bf907f0 SHA-1: ef08a9bf845169ddfd75eb6837927f5f2ab0cfb2 SHA-256: a629a57cc121202bfb80eb517582638c73f832cad6fd16db9be66b9942ee5df5

66 Risk Score

Malware Insights

MITRE ATT&CK

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

The ML classifier strongly indicates maliciousness, supported by heuristics for embedded script payloads and embedded files within the PDF. The presence of an embedded file object suggests a multi-stage attack where this PDF acts as a dropper. The document body contains obfuscated JavaScript, likely intended to execute the embedded 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/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` `96ef6bae1602dc230a8833d6670e966a513a951bb7dc6dc66318bca6e9f4c21d`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xD5	12802 bytes

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