Malicious PDF — malware analysis report

Static analysis result for SHA-256 68e396986aeb4ed5…

MALICIOUS

PDF

94.1 KB
MD5: 868da5604c26646d62243fe61c26f8ae SHA-1: 666e4f7adc348047ae675df3dceebd103f631530 SHA-256: 68e396986aeb4ed581d3a325f83726fd3895164b24ced581b0b4c4246d2b878b
168 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF utilizes XFA forms and contains embedded JavaScript, as indicated by the PDF_XFA and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. ClamAV detections confirm its malicious nature, identifying it as Pdf.Exploit.Agent-6136306-0 and an extracted artifact as Pdf.Exploit.Agent-36769. The embedded script, though obfuscated, appears to be designed to download and execute a secondary payload, a common technique for initial compromise via malicious documents.

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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low 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 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_00000246.bin
5a0bd9805e67a4c3e0811f24b7723915747a71a7e2d9737dfb81235961be8fd4		 pdf-embedded-script PDF raw stream script payload at offset 0x246 95636 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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