PDF malware analysis — malicious · eb11c6a359451d9d

MALICIOUS

PDF

18.3 KB

MD5: 0c23bfd043a8d5a7222733799f5670ff SHA-1: 1ad81115f9f5cbca6f49eb0e9b583a97c10f26cd SHA-256: eb11c6a359451d9d6303595e6794112bb5b23296f2a44ebe1b4d85e59f0fa844

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File

The PDF was flagged by multiple high-confidence heuristics, including ML classification and ClamAV detections indicating it is an exploit dropper. The presence of an embedded script payload further supports this. The embedded URL, while seemingly benign, is present within the document structure.

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` `449991f9a1a0cac9f996aa34e9d36a59d50a6bc0dcbf8a1fe37044116e80eceb`	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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