WinSCP fails to open a PDF in the explorer interface (SFTP)

With WinSCP 4.0.3, using an SFTP session, if I double-click on a remote PDF file, WinSCP will open a text editor with the source code of the PDF, instead of calling Acrobat Reader, which is the default reader for PDFs on my computer. This would be something nice to improve.

Thanks

Please read documentation.