PDF malware analysis — malicious · a3f00b32a6079735

MALICIOUS

PDF

18.4 KB

MD5: 023ab835176e102baab6f3a8fcce2631 SHA-1: 0688e97b1f49e2ab6247372189fc3f454e5928f0 SHA-256: a3f00b32a6079735ff28df5b79d581e132ec50ffc1478c07c4a9e7abe6225044

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1566.002 Phishing: Spearphishing Attachment

The file is identified as a malicious PDF by multiple high-confidence heuristics, including ML classification and ClamAV detection. The presence of an embedded script payload and XFA form suggests an exploit attempt. The embedded URL, while not directly malicious in reputation, is part of the document's structure and likely related to the exploit delivery mechanism.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36789 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36789
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://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_00000325.bin` `f2d67c92cfd94bc37a3c88e0cc4ca3b27fab214e2486ca135e0361e17b55f655`	pdf-embedded-script	PDF raw stream script payload at offset 0x325	18087 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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