PDF malware analysis — malicious · 36adb3859f43bae9

MALICIOUS

PDF

43.3 KB

MD5: 80623a2c20937e8146cf09709d98922e SHA-1: bdc0d5c0585155b4baaa06dd9c66d9668dd388b2 SHA-256: 36adb3859f43bae93ba5517b2a14b970ae58bbae6b67173d2948620c0d876a74

156 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious Attachment T1553.005 Subversion: Mark-of-the-Web Bypass

The PDF file contains embedded content and a script payload, as indicated by the PDF_EMBEDDED and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. ClamAV detection as 'Pdf.Exploit.Agent-36830' further confirms its malicious nature. The embedded script likely attempts to download and execute a second-stage payload, a common technique for PDF-based malware delivery.

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` `e255f4471a9775ca48ce3d73173c47a7182ea92e15dbfb3d15e9dc61144dbd69`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	43590 bytes
Detection ClamAV: Pdf.Exploit.Agent-36830 Obfuscation or payload: unlikely

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