Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19195495b0e6c2a…

MALICIOUS

PDF

42.5 KB First seen: 2026-05-09
MD5: f026828f6567af2b74f363d335853964 SHA-1: 9ff7d4c62dbd2d890f5cdada8cadb2e734a59822 SHA-256: e19195495b0e6c2ac094a7ff6afc0e51e72f51295bd7e01b21e000a18a6306f7
190 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.001 PowerShell

This PDF file was flagged as malicious by multiple heuristics, including ML classification and ClamAV detection (Pdf.Exploit.Agent-36830). It contains an embedded script payload and an embedded file, indicating it is designed to deliver and execute further malicious content. The presence of XFA forms and embedded files suggests a common delivery mechanism for exploits targeting PDF viewers.

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
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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 info 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/ In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42736 bytes
SHA-256: e4b655782299d8a8d4dadfc8b88b2f8179d2b6a1c837f138838af8dc0bbff8c3
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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