PDF malware analysis — malicious · 396671a7d2a2c3fd

MALICIOUS

PDF

97.0 KB

MD5: c5ab4e672e459d63b9fb39364b80d131 SHA-1: c8600ad204a2c7bb5d4847cdd84da5d64cfd24b0 SHA-256: 396671a7d2a2c3fdd9b8fdd2fe0e5cf03bb7be026aced397a560089348aed71f

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF utilizes XFA forms, a known vector for exploits. A high-confidence ML classifier and ClamAV detection confirm its malicious nature. The embedded script, while not fully detailed, is flagged as a payload, indicating it likely downloads and executes further malicious content. The presence of XFA and embedded scripts points towards an exploit delivery mechanism.

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
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.
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_pdf_script_0000026c.bin` `575e41c199c33aa7d1bbef3455bf4dea5db9de23f24f8420ce868cf68abe9fde`	pdf-embedded-script	PDF raw stream script payload at offset 0x26C	98655 bytes

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