\documentclass[12pt]{article}
\setlength{\oddsidemargin}{-1 cm}
\setlength{\textwidth}{17.5cm}
\setlength{\topmargin}{0cm}
\setlength{\headheight}{0ex}
\setlength{\headsep}{0ex}
\setlength{\textheight}{26cm}

\usepackage{graphicx}

\pagestyle{empty}

\begin{document}

\includegraphics[width = 8 cm]{new.pdf}
\hspace{\fill}
\includegraphics[width = 8 cm]{ext.pdf}

\bigskip

\includegraphics[width = 8 cm]{mg.pdf}
\hspace{\fill}
\includegraphics[width = 8 cm]{int.pdf}


\end{document}