PDF malware analysis — malicious · feba55fb5122f78d

MALICIOUS

PDF

42.7 KB

MD5: 8099d90c6bd94a68ea35bb7c61e06db4 SHA-1: 0f5c28a5b360e8f0809a4d117114653d676f76e8 SHA-256: feba55fb5122f78de0a0284c18a0dfc4a9359516baceac54e9e944206ac53c8d

156 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution

The file is a PDF document identified as malicious by ClamAV with the signature Pdf.Exploit.Agent-36830. It contains an embedded script payload and an embedded file, indicating an attempt to exploit vulnerabilities within the PDF reader. The embedded script is heavily obfuscated, making its exact function difficult to determine, but it is likely responsible for executing the embedded artifact.

Heuristics 6

ClamAV: Pdf.Exploit.Agent-36830 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36830
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `185b0f9e72abe356d0b1bb69f9e31495fa8d1b901608cbd69573440183d1230e`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	43011 bytes
Detection ClamAV: Pdf.Exploit.Agent-36830 Obfuscation or payload: unlikely

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