Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fc9e3d073306b02…

MALICIOUS

PDF

42.4 KB
MD5: dd37782d5e238b1d721d1e968c6af80e SHA-1: 40dfe911f1003d153b323d5be37b46bfe53e1529 SHA-256: 7fc9e3d073306b028c8490a6aa3627a8bc7fd8cc956d5a8c2703724f2c2039b6
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is a PDF identified as malicious by ML classifiers and ClamAV with the signature Pdf.Exploit.Agent-36830. It contains an embedded script payload and XFA form, indicating an attempt to exploit client-side vulnerabilities for execution. The embedded file and script suggest it's designed to download and run a secondary 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 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 script payload in PDF stream low 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 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.

FilenameKindSourceSize
embedded_file_obj0008.bin
18ab5afe80876614e1b66ca109a18a5cf5ad47f09f7bfaf6a6543c09584deda7		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42620 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.