Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0be04c2ba6e8de9…

MALICIOUS

PDF

42.9 KB
MD5: 58f164b773dc013d3c5700ea03fc75f5 SHA-1: c359d54a9a0f79bc824a546023db2d1e1120dbb8 SHA-256: f0be04c2ba6e8de931c57c5263cecd357b1ee7dfba0dc6dd50b0982d0a13bfd2
156 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Agent-36830' strongly indicates malicious intent. The presence of an embedded script payload and an embedded file further supports this, suggesting the PDF is designed to exploit vulnerabilities or trick the user into executing a secondary payload. The embedded artifact 'embedded_file_obj0008.bin' is likely the delivered malware.

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
07ce77ac890145d0028851eec1583370a2115875b4edf3e3d1d51233942384aa		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 43146 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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