PDF malware analysis — malicious · 567328560311a035

MALICIOUS

PDF

18.3 KB

MD5: c564131db782cb69e139c49b07f9bcbc SHA-1: 3d500ecd0892923335417ce021ad4ca58b176d5c SHA-256: 567328560311a035315e5b465b00f0eb455835996cb18ed47e343a566c785ca0

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious Attachment T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file was flagged by multiple high-severity heuristics, including ML classification and ClamAV detections, indicating it contains malicious content. The presence of an XFA form and an embedded script payload suggests an exploit is being leveraged. The embedded script likely downloads and executes a second-stage payload, as indicated by the ClamAV detection on an extracted artifact. The embedded URL is likely part of the exploit chain.

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` `9eb4d2be63002377577730fd561045c6360c72ebe483d3ea17bc9e00e2695908`	pdf-embedded-script	PDF raw stream script payload at offset 0x325	18007 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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