PDF malware analysis — malicious · 5c5cc5d106884b4f

MALICIOUS

PDF

12.8 KB

MD5: 4092a2669c27edaa7b6d57063ab1c19e SHA-1: 8c7d73f2c49c1717ec5528077e87335f3bfd6f28 SHA-256: 5c5cc5d106884b4ffe217272a1eb21fb832b2f26219ca59c6380b9d679bdcebd

108 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains embedded JavaScript within an XFA form, a common technique for exploiting PDF vulnerabilities. The script's obfuscated nature and the ML classifier's high confidence score suggest it's designed to download and execute a secondary payload. The ClamAV detection 'Pdf.Exploit.Agent-6136306-0' further supports this assessment.

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` `2207936427b95e59cd9631c2a06b385e7eb2516fb3b997d30f75628b454a573b`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	12328 bytes

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