PDF malware analysis — malicious · 389e3e0aa8d04b4b

MALICIOUS

PDF

13.4 KB

MD5: 19a967e71ffb690cd2aa82770576ec37 SHA-1: 79c58b494b6ea22a3b05403f1746a91ee9d8bdfd SHA-256: 389e3e0aa8d04b4b5dea5073911d494d80b2eabfa2dbd9f8b766f7ce91e6cbad

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1566.002 Phishing: Spearphishing Attachment

The PDF was flagged as malicious by an ML classifier with high confidence. It contains an embedded script payload and an embedded file, indicating it is likely intended to deliver a secondary exploit or malware. The presence of XFA form elements also suggests a potential vector for exploitation.

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` `1a69d4f1a4b0c2e77b73544c065591b7a05c85e2bf2193102719c4eb9cf36e29`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xD1	12982 bytes

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