Malicious PDF — malware analysis report

Static analysis result for SHA-256 3650192ebf3dd291…

MALICIOUS

PDF

18.4 KB
MD5: 85b2d8c6247a14dc383e22858becfaf0 SHA-1: 4ffbc807f54018938e2bebcb45cee2408230163c SHA-256: 3650192ebf3dd2910a0e261e2a939ccd2c71e86b33fcffcc4e80abea25496ece
148 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload and utilizes XFA forms, which are known vectors for exploitation. ClamAV detections indicate it is a malicious PDF exploit. The embedded script is likely responsible for delivering the secondary payload, though its exact function cannot be determined without further analysis of the extracted artifact.

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
cfb6a39a82f2f7a74c5cfc22dd89a959d2b8def7693dd2f342aaa2f78e6fa3a1
pdf-embedded-script PDF raw stream script payload at offset 0x325 18079 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36809
Obfuscation or payload: unlikely