PDF malware analysis — malicious · ade97f6f9f4522f6

MALICIOUS

PDF

42.4 KB

MD5: 557b40511677234bdb7b5a11b123e809 SHA-1: a45f0b0c1c86f89082c8536765123a26bac50c2b SHA-256: ade97f6f9f4522f6beb4c6034fc16ea5fdae4bf6da03f63efb6104331e95473a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1566.002 Phishing: Spearphishing Attachment

The PDF file was detected as malicious by ClamAV with the signature Pdf.Exploit.Agent-36830. Static analysis revealed embedded content, including a script payload and an embedded file, indicating an attempt to deliver a secondary malicious artifact. The embedded script's functionality is not fully discernible due to obfuscation, but its presence alongside the embedded file strongly suggests a multi-stage attack. The benign Adobe and unknown XFA-related URLs do not detract from the malicious indicators.

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` `2c12bf24758fe4a23838fcb09169346914d804126b6607894dd94875329ac76e`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	42662 bytes
Detection ClamAV: Pdf.Exploit.Agent-36830 Obfuscation or payload: unlikely

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