Malicious PDF — malware analysis report

Static analysis result for SHA-256 22b338fac068694f…

MALICIOUS

PDF

14.7 KB
MD5: 4e8690fb1cd8d496d722c6c23d32748d SHA-1: 50eb584d42b3c78bad534f16a102ebe0caf239ec SHA-256: 22b338fac068694f44e5e318ec5a9f0100d8abfc7803f7246901bde27b920ad2
148 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF document contains an embedded script payload and triggers heuristics related to XFA forms and embedded script execution. ClamAV detections indicate it is a known exploit delivering a dropped payload. The embedded artifact is a PDF-embedded script, suggesting it is designed to execute malicious code upon opening.

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000329.bin
aea863c4fc36a6f34fe6fdae9a421330313f9ba6beaf8443984d6c8afc7d1fbb
pdf-embedded-script PDF raw stream script payload at offset 0x329 14298 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36809
Obfuscation or payload: unlikely