PDF malware analysis — malicious · 1e8492d11541ef07

MALICIOUS

PDF

14.6 KB

MD5: b169cd1bc2a49bf646d80c7ceab5d56e SHA-1: a5073326c9f09fb6d3c6fd54c3f00823871d68e6 SHA-256: 1e8492d11541ef07749e057f39721935e00a2f178431727343206f7d1de19d75

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file was flagged as malicious by multiple engines, including ClamAV, which identified it as Pdf.Exploit.Dropped-78 and Pdf.Exploit.Agent-36809. The presence of an embedded script payload and XFA form suggests an exploit designed to download and execute a second-stage payload. The embedded URL, while seemingly benign, is part of the document's structure and could be a lure or part of the 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` `8b9339533b3ef76ca9a9770b5e2eefe80ae1379ef06eda7721651b8c0d420006`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14271 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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