PDF malware analysis — malicious · 9ef80d0401bcf385

MALICIOUS

PDF

13.5 KB

MD5: a9d5f166d5cb291f033371fa171b472e SHA-1: 1f1cbf24680807693ff0734e8180f87bedff6b0d SHA-256: 9ef80d0401bcf385219a810c3ac0763b737cbf3e9ae43653a10f4ecc80bab2c8

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 script payload and an embedded file suggests it is designed to execute malicious code or download a secondary payload. The XFA form structure is also noted, which can sometimes be leveraged for exploits. The embedded URLs are not directly indicative of malicious activity but are included as potential indicators.

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` `136a6141d0c9a975b7c75a5b972fb2591e8195fe2e5c40f2ba409c045bc8d5c6`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	13123 bytes

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