PDF malware analysis — malicious · b5fd09078c7538b3

MALICIOUS

PDF

12.8 KB

MD5: b44f7db94420c13a0ce4d06457f6d76d SHA-1: c933729067d8d0854bca430ac147db1ae3d62564 SHA-256: b5fd09078c7538b3242d00387b988b52c38e59a14990c277531b8ddf643f2f49

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Agent-6136306-0' and a high ML classifier score. The presence of an XFA form and an embedded script payload indicates a likely exploit attempt. The embedded script is responsible for downloading and executing a second-stage payload, as suggested by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. The embedded URL was not flagged as malicious but is included as a potential indicator.

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://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_00000359.bin` `753488742e263965c9969988659f8013f2360d7a3e6676a7d5b9827131e2a42a`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	12330 bytes

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