PDF malware analysis — malicious · 5915cc9f99e29481

MALICIOUS

PDF

18.3 KB

MD5: fb7f7d4ea0c5f329fcbcf55993ea37e5 SHA-1: 401b5f33319fc073f2fcb637739d8405a9c8780f SHA-256: 5915cc9f99e294817ae06451406f0fd22c538ac672c1802245e1df304e1d5ecd

178 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains an embedded script payload and is flagged by multiple detection engines, including ClamAV, as a malicious exploit. The presence of XFA form elements further indicates a potential attack vector. The embedded URL is likely part of the exploit chain or a lure.

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` `4eb37e86ac4aa5ea09c0ec2c80882688e14d12d178a64b569ae71b9a80d17b78`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	18025 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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