PDF malware analysis — malicious · 79b8fa2d613583bc

MALICIOUS

PDF

42.3 KB

MD5: 9450794e26c4160f467d0921f135a562 SHA-1: fdadd51603894b05c0b68952a326b84060d05402 SHA-256: 79b8fa2d613583bcfa046402c4d29130f5672bde759522840f455ac36ad54dca

156 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution

The file is a PDF document that contains embedded scripts and an embedded file, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD and PDF_EMBEDDED heuristics. ClamAV detections confirm this is a known PDF exploit, specifically 'Pdf.Exploit.Agent-36830'. The embedded script payload is likely responsible for executing the exploit and delivering the embedded malicious 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` `43d1f94c71b3cb35699c86d210dbdc4cf3877d2df73ee514796de535689c4b14`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	42521 bytes
Detection ClamAV: Pdf.Exploit.Agent-36830 Obfuscation or payload: unlikely

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