PDF malware analysis — malicious · c50aa310a5b8af28

MALICIOUS

PDF

42.4 KB

MD5: 7c4e81ba7ed83cd96cd5e273d9386f20 SHA-1: 59af5a940efd1e6f426dfd6a46d73a897b82279e SHA-256: c50aa310a5b8af2817cd185942f0fa59e3b1f83a009e6f14eea2a6158599e445

156 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File Execution T1204.002 Malicious File Execution: Malicious PDF

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 within a PDF stream, which is a common technique for delivering exploits. The embedded file and XFA form suggest a complex document structure likely designed to facilitate the exploit execution.

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` `b67f582dc5962e2bc566b15a180dec0192a4e3fba1cedf2a63823f315f355451`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	42703 bytes
Detection ClamAV: Pdf.Exploit.Agent-36830 Obfuscation or payload: unlikely

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