Malicious PDF — malware analysis report

Static analysis result for SHA-256 967c3a9b4167e693…

MALICIOUS

PDF

42.6 KB
MD5: 49eb80f48fd80a02ac69b3000c805e7f SHA-1: c70b6beb874adcaf32d88654de077a6dcd11c74d SHA-256: 967c3a9b4167e693667addb38ad4927dd2e3c6324d58edad5de2651a95fc9196
156 Risk Score

Malware Insights

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

The critical ClamAV heuristic firings indicate this PDF is recognized as a known exploit. The PDF contains embedded content and a script payload, suggesting it's designed to execute malicious code upon opening. The embedded URL heuristic also points to potential malicious links within the document.

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
e10f7aab267d673ff575f2357f634a1310a744896055891cabca3d8ef0d11907		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42890 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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