Malicious PDF — malware analysis report

Static analysis result for SHA-256 e85d4c7d49812100…

MALICIOUS

PDF

46.6 KB
MD5: 5c2ed4c15a30c97edbc7785e26f6e011 SHA-1: aa33e45bc1bdafab23946e1ba2f0a649ed227336 SHA-256: e85d4c7d49812100fe2d7dffd616e3c840da1c039cfbde48709f617b2823c5ef
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1553.005 Mark-of-the-Web Bypass

The PDF file was detected by ClamAV as Pdf.Exploit.Agent-36830, indicating it contains exploit code. Heuristics confirm the presence of an embedded script payload and an embedded file, which are common delivery mechanisms for malicious content. The embedded file, named 'embedded_file_obj0008.bin', is likely the second-stage payload.

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
d9d393144230a0721508b4ce2df1a3dc8411087917b91ae013ea901bf22c7f06		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 46946 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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