\documentclass[a4paper]{minimal}
\usepackage[margin=0cm,landscape]{geometry}
\usepackage{graphicx}
\usepackage[utf8]{inputenc}
\pagestyle{empty}

\pdfinfo{
  /Title (Chaosknoten)
}

\begin{document}
\includegraphics[page=4,scale=.707]{Chaosknoten.pdf}
\includegraphics[page=1,scale=.707]{Chaosknoten.pdf}
\includegraphics[page=3,scale=.707,angle=180]{Chaosknoten.pdf}
\includegraphics[page=2,scale=.707,angle=180]{Chaosknoten.pdf}
\end{document}

