PDF malware analysis — malicious · b1496679ff4d305b

MALICIOUS

PDF

42.5 KB

MD5: 0d06a6dee3e64c371229f0efa05a2823 SHA-1: 11abb5fbbd0439f344cde5bc5de86326f68d12dc SHA-256: b1496679ff4d305b6372c318bcc1d6107b3cc92f7d1fb9cb535aec475160523a

186 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The PDF was flagged by ML classifiers and ClamAV as malicious, indicating it contains an exploit. The presence of an embedded script payload and an embedded file further supports this. The ML classifier output of 0.999995 suggests a high likelihood of malicious intent. The embedded script is heavily obfuscated, making its exact function difficult to determine, but it is likely responsible for executing the exploit and delivering a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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` `ad69d323330d735b0e88b3913f2b648627c49f19258d20bcd09b9290d7a61359`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	42808 bytes
Detection ClamAV: Pdf.Exploit.Agent-36830 Obfuscation or payload: unlikely

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