Malicious PDF — malware analysis report

Static analysis result for SHA-256 5659f6c204406956…

MALICIOUS

PDF

82.1 KB
MD5: 7b1dc8f57118a60615801b7a357f27c0 SHA-1: 365ec7f270fbf32bcd57ae90e18db40d16369741 SHA-256: 5659f6c2044069569a4f8f22d8aac0d1fe6a6d47cd9b0b1c8e27c76a79d7b82d
148 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains an embedded script payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. ClamAV detection as Pdf.Exploit.Agent-6136306-0 further confirms its malicious nature. The presence of XFA form elements suggests a potential exploit targeting Adobe's XML Forms Architecture. The embedded script is likely responsible for downloading and executing a second-stage payload, although the exact mechanism is obscured.

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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_0000023b.bin
6457e56498f1a5deff93befadfc143208efc44a4b027fc45296513497f99ae5b		 pdf-embedded-script PDF decompressed stream script payload at offset 0x23B 84059 bytes
Detection
ClamAV: Pdf.Exploit.Agent-6136306-0
Obfuscation or payload: unlikely

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