Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea73a2a749b15189…

MALICIOUS

PDF

79.5 KB
MD5: 7b2a57485d09ae746b7d65e37cba8704 SHA-1: 790746576244b6f272e069fd71e11b74fdc95622 SHA-256: ea73a2a749b15189354a2be457ba48003fdfa5a7ebfff1277d425a951ab1b369
148 Risk Score

Malware Insights

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

The PDF file utilizes XFA forms and contains an embedded script payload, as indicated by critical heuristic firings. ClamAV detections confirm its malicious nature, identifying it as Pdf.Exploit.Agent-6136306-0 and Pdf.Exploit.Agent-36769 on an extracted artifact. The embedded script is likely responsible for executing the exploit and delivering a secondary payload.

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
89ddc1bcae08cb5df83cb91e7506845bceb2a99b24dffcefca1d0c43e8555c4e		 pdf-embedded-script PDF raw stream script payload at offset 0x23E 80645 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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