Malicious PDF — malware analysis report

Static analysis result for SHA-256 2086d408a428ab62…

MALICIOUS

PDF

79.1 KB
MD5: dc0e7e5a3078ce4442fc67731f0e5e76 SHA-1: 2e7e402bce2cfefeb831c71f50fea090cb001e5d SHA-256: 2086d408a428ab6292688a6b4933ba7c2b045dbb8907828aa3151caa352d7ff3
178 Risk Score

Malware Insights

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

The PDF was flagged by multiple high-confidence heuristics, including ML classification and ClamAV, indicating it contains an exploit. The presence of an XFA form and an embedded script payload further supports this. The embedded artifact, detected by ClamAV as Pdf.Exploit.Agent-36769, is likely the delivered payload. The specific exploit mechanism is not detailed, but the overall pattern suggests a malicious PDF designed to execute an embedded exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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.
  • 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_pdf_script_0000023e.bin
5367531ae89d13ff6f16be9b3c6715a699382d6164db7d702f11d5fd2f591bb7		 pdf-embedded-script PDF raw stream script payload at offset 0x23E 80299 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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