Malicious PDF — malware analysis report

Static analysis result for SHA-256 c90c10d2332d9cf2…

MALICIOUS

PDF

42.6 KB
MD5: 899c1c3cc125b9beb7997dda56f8113b SHA-1: 4c95c26a4e58bef6f61e146adc258c007f5af111 SHA-256: c90c10d2332d9cf22e54a4d2321d3e2a57483bab65c441708bc1c1bbec81fb54
156 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Agent-36830' strongly indicates a PDF exploit. The presence of an embedded script payload and an embedded file further supports this, suggesting the PDF is designed to deliver and execute a secondary malicious artifact. The embedded JavaScript, while obfuscated, appears to be involved in the execution chain.

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-36830 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36830
  • 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/ 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
a4c02a6b10ada58aa434b2db87e97327ed7b425c6fbd0197656dfb5d80e7d7bb		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42888 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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