PDF malware analysis — malicious · 17ebdc789edd654a

MALICIOUS

PDF

12.7 KB

MD5: 2c7774491b0e98c48122932f11b25c0f SHA-1: 51f911c93d97479f96debb55379dd99b6789d5cd SHA-256: 17ebdc789edd654aeb7d586544836a2f6688a2bd76b90b66e8da2e807b2a1fa9

108 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. The presence of an XFA form and embedded JavaScript points to an exploitation attempt. The JavaScript, though obfuscated, appears to be designed to download and execute a secondary payload, as suggested by the embedded script's structure and the ML_NYX_PDF_MALICIOUS firing.

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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00000359.bin` `2ac5319ebd1b0141111a7352747fd6feca1c89534dc3d400b8ffd6b5cbe6806c`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	12304 bytes

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