Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd358d90dbfa1e3…

MALICIOUS

PDF

79.1 KB
MD5: 9617473c8b91470895b8dfd34e5c5c09 SHA-1: 792834d6546180eca75813d95d6a0496ae206365 SHA-256: 2dd358d90dbfa1e3e15451151bad8bee6fb9e2dee0c22f7bb11e6f0165f2b08c
148 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1566.002 Phishing: Spearphishing Attachment

The PDF file contains an embedded script payload and utilizes XFA forms, which are known vectors for exploitation. ClamAV detections indicate the presence of a known exploit, likely Agent-6136306-0. The embedded script is the primary mechanism for delivering the malicious payload, although its exact function cannot be determined due to obfuscation.

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
1c9891ddc3c341a5529db3b244c3b4b27281d48c8c08e1ea38e072b8a526ba09		 pdf-embedded-script PDF raw stream script payload at offset 0x23E 80301 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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