Hanterm uses 'JOHAB-hyung' HANGUL font.
You can find johab hangul font in cair.kaist.ac.kr
First, you should get hangul font.
And then transfer the .bdf files to .pcf by
% bdftopcf xxx.bdf > xxx.pcf
And then copy the .pcf files to a directory.
Let's assume the name of the directory is
/student/yyy/fonts
% cp *.pcf /student/yyy/fonts
% cd /student/yyy/fonts
% mkfontdir
Then, you can find fonts.dir file generated.
Then,
% xset fp+ /student/yyy/fonts
If the name of the hangul font is -kaist-... ,
% hanterm -hfn -kaist-...
will work.
For your convenience, insert following in .Xdefaults
Hanterm*hangulFont: -kaist-..
Hanterm*font: 8x13bold (Any font you prefer..)
insert following in .xinitrc and .xsession
xset fp+ /student/yyy/font