Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6343438b67d9ca2…

MALICIOUS

PDF

18.5 KB
MD5: 784330918e15c9880aeab3670afb5fd7 SHA-1: 04ba337d2eb8a1b995f0d1edd1ec6e1d53ca68bc SHA-256: b6343438b67d9ca297c212c17c6986fa8f39053620d6ab3dc5a92040da138621
148 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains an embedded script payload and utilizes XFA forms, both indicative of malicious intent. ClamAV detections further confirm its malicious nature, identifying it as Pdf.Exploit.Agent-36789 and Pdf.Exploit.Agent-36809. The embedded script is likely responsible for downloading and executing a second-stage payload, a common technique for PDF-based malware delivery.

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
a626950b668ba7b1f3f41c6164ef8edb205468e68c018ec49d932c13cdcf2853
pdf-embedded-script PDF raw stream script payload at offset 0x325 18206 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36809
Obfuscation or payload: unlikely