PDF malware analysis — malicious · f5a0faf50834d1e9

MALICIOUS

PDF

18.3 KB

MD5: d1a52faa01a962e0550ca5f7daae3b82 SHA-1: 25377ad0f0455b80a4ad7750f6e6ff12e0d49c21 SHA-256: f5a0faf50834d1e9c57a8a0959649595bf474555af383d8ca74968b7afe2d8e1

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF utilizes XFA forms and contains an embedded script payload, flagged by multiple high-severity heuristics including ML and ClamAV. ClamAV detections indicate it's an exploit and a dropped agent. The embedded script is the primary mechanism for delivering the malicious payload, likely involving the execution of further malware.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
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_00000329.bin` `17dae7440c0fad1131a1de5523a3459223ade01b3b6362d235d635c7c25fb4b1`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	18018 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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