PDF malware analysis — malicious · e50079f5f90d36df

MALICIOUS

PDF

14.6 KB

MD5: 9cda28bc88e654a894e0427b1178b3ce SHA-1: cd38836f127eb46174cc97203e39f9b0a6cbe512 SHA-256: e50079f5f90d36df03686218a891ca2ffeb66d9f09b904a83e6f20d181d78b02

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file was flagged as malicious by multiple engines, including ClamAV, which identified it as Pdf.Exploit.Dropped-78. An embedded script payload was detected, and a secondary artifact was also identified as malicious by ClamAV (Pdf.Exploit.Agent-36809). The presence of XFA forms and an embedded script suggests the PDF is designed to exploit vulnerabilities and download further malicious content.

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` `db4c783ee12967f2e038aa3156dd1f58c0f816dbdff1c9be0a50ecd6e80fb4e9`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14259 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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