Malicious PDF — malware analysis report

Static analysis result for SHA-256 98c0f3652a05602b…

MALICIOUS

PDF

18.3 KB
MD5: 6a62f12ea7bccd9e08f2fce0671d89fd SHA-1: 84f2325ae159d6606f95e2a04e95ae7a057ce6ba SHA-256: 98c0f3652a05602b969932aa116f327e658014db32f1c4ce707e09486b935c4a
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 triggers heuristics related to XFA forms and embedded script execution. ClamAV detections indicate it is a known exploit, likely Pdf.Exploit.Agent-36789. The embedded script is the primary mechanism for delivering the malicious payload, though its specific actions are not detailed in the provided evidence.

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-36789 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36789
  • 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://www.x&#102;a.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000325.bin
61f6e81e6561129abc99e27b3e8aa33c3cc0dca344d964ea621a14d161f4dab0
pdf-embedded-script PDF raw stream script payload at offset 0x325 17981 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36809
Obfuscation or payload: unlikely