PDF malware analysis — malicious · 22c3ddbed7c36fb0

MALICIOUS

PDF

94.2 KB

MD5: e3dc8c8a4050b96b65841f801f7593e2 SHA-1: 62b5f7758514407660603db84bf43185bee03954 SHA-256: 22c3ddbed7c36fb055a313ff10a903ead80493605d8fe1a0435dc02eda37e3bd

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

The PDF utilizes XFA forms, a known vector for exploitation. High-confidence heuristics and ClamAV detections indicate the presence of an embedded exploit and malicious payload. The ML classifier output of 0.999992 strongly supports the malicious classification. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
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://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00000246.bin` `8c05bc0a5a4b0af3dba4ddc42c6caf49441121b557cf9a545e1293842dede10c`	pdf-embedded-script	PDF raw stream script payload at offset 0x246	95742 bytes
Detection ClamAV: Pdf.Exploit.Agent-36769 Obfuscation or payload: unlikely

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