PDF malware analysis — malicious · 9cdf9f8efe40e3b6

MALICIOUS

PDF

14.7 KB

MD5: c2260d33ee0aee1464398328f02bc000 SHA-1: ee44d5f95ca7096322bad8992aa2fb13fccf4003 SHA-256: 9cdf9f8efe40e3b6d4edff368ea4c8522ef8543e385166f75ebda6bcd10a6e24

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains an embedded script payload, flagged by heuristics and a machine learning classifier. ClamAV detections indicate it is a dropped exploit, likely delivering a secondary payload. The embedded URL is likely part of the lure or exploit chain.

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` `89f61734ff328964a69c9b583f3d68f50de904776725a05f2c4b8448a5207fd5`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14302 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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