Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ad0ed541ca83c7…

MALICIOUS

PDF

3.8 KB
MD5: 1635521b971e927c1d55af99b321c250 SHA-1: e59fb834e691abbb61a4cf30ce656ec3c817c01e SHA-256: c3ad0ed541ca83c7c7f12689dc9a43b5c762b1c2233442d09137b1acac87493e
138 Risk Score

Malware Insights

MITRE ATT&CK
T1059.003 Windows Command Shell T1105 Ingress Tool Transfer T1566.001 Spearphishing Attachment

The PDF file contains a malicious URI that leverages cmd.exe to execute a series of commands. These commands first disable the Windows firewall and then use FTP to download a file named 'ms32.exe' from the IP address 203.121.69.116. Finally, the downloaded executable is launched. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to a PDF exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-34360 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-34360
  • PDF URI references command interpreter path high PDF_DANGEROUS_URI_COMMAND
    PDF contains a /URI action whose target uses a mailto/path traversal shape and references a command interpreter or scripting host. This is not a normal web link and matches legacy PDF command execution/dropper lures.
  • External URI low PDF_URI
    PDF contains an external URL action
  • 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.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/