Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0cb4b77bf2b238…

MALICIOUS

PDF

10.4 KB
MD5: 20cfbb7c9d27859267cb5d3ec588bfb9 SHA-1: 017f1c9ea6093512b8718af043edc44859c6aa77 SHA-256: 0d0cb4b77bf2b2384b1129eb3ea6d027f12c2feef19de30f0b3324288422f65f
110 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically detecting an exploit. It contains an embedded file, which is a common technique for delivering secondary payloads. The presence of XFA forms and embedded files suggests an exploit targeting PDF rendering or form processing capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-22639 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-22639
  • 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
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.4/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin
d0af0074c94ab69cb9102c62a48911123bcb11c111ca78fe57a06d3450a24543		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x80 13408 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).

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