Malicious PDF — malware analysis report

Static analysis result for SHA-256 8066b1993e2e7f2a…

MALICIOUS

PDF

43.0 KB
MD5: e521935fccbcbfed7e4fb6aca7708ed1 SHA-1: 75e448ab045de9f5f044580218cf901921e09aa5 SHA-256: 8066b1993e2e7f2a6ebeb2b798b6a5bcb9aa061494d8d47efcc431ff72439ef4
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

The PDF was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. The presence of an embedded script payload and an embedded file suggests the PDF is designed to download and execute a second-stage payload. The extracted document body content is highly obfuscated and does not provide clear user-facing text, further supporting a malicious payload delivery mechanism.

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.

FilenameKindSourceSize
embedded_file_obj0008.bin
f62fdaddc386b0036f9c2273667b3dee38cf8e7df40024e7ac22707b5f8501f6		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 43278 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.