PDF malware analysis — malicious · 0333b4ea82919f13

MALICIOUS

PDF

79.4 KB

MD5: 0e6260ffe39fcef3c7b071d1156deca7 SHA-1: ae3f48fc7dbfc61d27e9e066f4f833f90202939c SHA-256: 0333b4ea82919f13b6a256d1336c400232027695a04dfd415cf94316042eff86

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains an XFA form with embedded JavaScript, flagged by multiple heuristics including a critical ClamAV detection and a high ML score. The embedded script, though truncated and obfuscated, appears to be designed to download and execute a secondary payload. The benign URLs related to Adobe and XFA schemas are likely present to masquerade the malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded script payload in PDF stream low 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 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_pdf_script_0000023c.bin` `d8639cb20f3550cdf0812d738b5347305ae1c6f52cb14f43eb932b210b5e5e68`	pdf-embedded-script	PDF raw stream script payload at offset 0x23C	80622 bytes

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