Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eee379d26bb60b7…

MALICIOUS

PDF

79.4 KB
MD5: 4177ef25b193db72a35230521e93406e SHA-1: 2114258caf674e3c6b16a169749f05b26b2f435f SHA-256: 2eee379d26bb60b74133aa0b266bacfde237d8884f2422f28747867c4b76623b
148 Risk Score

Malware Insights

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

The PDF file utilizes XFA forms, a known vector for embedding malicious content. A critical heuristic identified an embedded script payload, and ClamAV detections confirm this as Pdf.Exploit.Agent-6136306-0. Further analysis of an extracted artifact revealed a JavaScript exploit (Js.Exploit.HTML-29). The embedded JavaScript likely attempts to download and execute a second-stage payload, contributing to the malicious nature of the document.

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_0000023c.bin
e4749c2a064c5156a2a5d8a598c239c2572197463cfee05a929520af89066b8a		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80633 bytes
Detection
ClamAV: Js.Exploit.HTML-29
Obfuscation or payload: unlikely

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