PDF malware analysis — malicious · 4ae6f8b15c9da66d

MALICIOUS

PDF

100.5 KB

MD5: a8147fee9b622a7cd9f2ce5dcdafe4e2 SHA-1: 93214c8f7060212e7275867a0726917410cc2b17 SHA-256: 4ae6f8b15c9da66d07f758228d441532700b97d250d9ee4c9402151405eb1476

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

The PDF was flagged by multiple high-confidence heuristics, including ML classification and ClamAV detection, indicating it is a malicious document. The presence of an XFA form and an embedded script payload suggests it is designed to exploit vulnerabilities or deliver further malicious content. The embedded script is likely responsible for the malicious payload delivery, though its exact function cannot be determined due to obfuscation.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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_00000246.bin` `ab4ccc693b6ae129f757ce6c934f7359158a20de94517f511f06ae1afac6eb1e`	pdf-embedded-script	PDF raw stream script payload at offset 0x246	102156 bytes
Detection ClamAV: Pdf.Exploit.Agent-36769 Obfuscation or payload: unlikely

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