\documentclass{article}
%%% utf8x.def를 부름.
\usepackage[utf8x]{inputenc}
\usepackage{ttfucs}

%%% 은바탕 글꼴 설정.
\DeclareTruetypeFont{unbt}{ounbtm}
\DeclareTruetypeFontShape{unbt}{m}{n}{ounbtm}
\DeclareTruetypeFontShape{unbt}{bx}{n}{ounbtb}
\DeclareTruetypeFontShape{unbt}{m}{it}{ounbtmo}
\DeclareTruetypeFontShape{unbt}{m}{sl}{ounbtmo}

\begin{document}

한글 테스트. \textbf{안녕하세요!} 안녕. \textit{안녕 안녕.}

\end{document}