PDF malware analysis — malicious · b87782b2ba796d18

MALICIOUS

PDF

42.8 KB

MD5: 41a42002aacccd7460bf2d6d7a9f5159 SHA-1: 8d9f65b23da19eb31c55c621ee8f83a2bae8e776 SHA-256: b87782b2ba796d1826137e4c24e02e42ee2629244979fe481d42e63ece30e84b

156 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution - Malicious File

The file is a PDF document identified by ClamAV as Pdf.Exploit.Agent-36830, indicating a known exploit. Heuristics confirm the presence of an embedded script payload and an embedded file, both common delivery mechanisms for PDF exploits. The embedded script, though obfuscated, appears to be involved in the execution of the exploit.

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` `b4d0c9452d4dc6fc2b86b80835438afd572984e19f0fe90af7f5de172c26b067`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	43095 bytes
Detection ClamAV: Pdf.Exploit.Agent-36830 Obfuscation or payload: unlikely

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