Malicious PDF — malware analysis report

Static analysis result for SHA-256 77eabb544c8a35c7…

MALICIOUS

PDF

46.6 KB
MD5: 0dd0628f2760f3b9b35394d9e202d450 SHA-1: c68ef87d21bff6786e84d5f7b370d983c7553475 SHA-256: 77eabb544c8a35c7fd06eb76e1429f31391857f1b562301cb06c8ed970f8fc17
176 Risk Score

Malware Insights

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

The PDF file contains embedded script content and is flagged by multiple heuristics, including ClamAV detection (Pdf.Exploit.Agent-36830), indicating it is designed to exploit vulnerabilities for client execution. The ML classifier also strongly suggests malicious intent. The embedded nature and exploit detection point towards a spearphishing attachment delivery method.

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
69e29de472d96c5730f80c6416c2b1c7230d59367820aaa3213a8c2df64003c5		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 46998 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.