Malicious PDF — malware analysis report

Static analysis result for SHA-256 af4796e7fd734631…

MALICIOUS

PDF

46.7 KB
MD5: 6b215e8fe9fd81827340883c5cb26927 SHA-1: e59e2a9c1e9f9fcbbefd51298934346bfe5b5ff1 SHA-256: af4796e7fd734631cffabac83ef9648e6ff4090cace2a3f0dfdaf4de9567e690
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The file is a PDF document identified by ClamAV as Pdf.Exploit.Agent-36830, indicating it contains an exploit. The critical heuristic 'PDF_EMBEDDED_SCRIPT_PAYLOAD' confirms the presence of an embedded script, likely responsible for delivering the malicious payload. The document body contains obfuscated JavaScript, further supporting the exploit delivery mechanism. The embedded file artifact is also a strong indicator of malicious intent.

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
1ff6eb9e6133c2bacc25e767ddb3c4b291c5460dbbb2f5a4d8937b4c86335482		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 47087 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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