Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b70444b61a93dba…

MALICIOUS

PDF

18.4 KB
MD5: 750e20b8363541d712009c88ba0c665d SHA-1: c04914fa661f29dd9ed7f67587e2f0c77f10a666 SHA-256: 1b70444b61a93dbafb4d3e0d3cb7653a53d398a9a9d590f2ed840b17c69393ff
148 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. ClamAV detections (Pdf.Exploit.Agent-36789 and Pdf.Exploit.Agent-36809) further confirm its malicious nature. The presence of an XFA form suggests a potential vector for exploit delivery. The embedded URL is likely part of the exploit chain.

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
3549e40b1fe00c2fa5d359f937dd378bc616d8a2bd4bad6579048dbba390ecb3
pdf-embedded-script PDF raw stream script payload at offset 0x325 18114 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36809
Obfuscation or payload: unlikely