PDF malware analysis — malicious · 5e2be8db86a934ee

MALICIOUS

PDF

14.6 KB

MD5: 5ad182d29e5d42e39f9deac4c1485a81 SHA-1: 66a67a276109835933d52c366511f32e8e8306fc SHA-256: 5e2be8db86a934ee198ab2b3bdcee602e0ac22d3b08f240a419b5d8c3395fbb3

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. The presence of an XFA form and an embedded JavaScript payload strongly suggests exploitation for client execution. The embedded script, though truncated, likely attempts to download and execute a second-stage payload.

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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded script payload in PDF stream low 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.
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` `82256f9c2d298f8a0e114b82966a66abd6cd92e2d6e0a86a085913c5461b3987`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14245 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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