Korean character is not displayed

In order to display non-Latin characters you need to utilize TTF embedding feature of PD4ML Pro.

See: pd4ml-html-css-pdf-tips-tricks-f7/ttf-embedding-t42.html

Also for command line conversions I would recommend to use our tool Pd4Cmd:

http://pd4ml.com/html-to-pdf-command-line-tool.htm