\documentclass{article}
\usepackage{docassembly}
\usepackage{lipsum}

\hypersetup{pdfpagemode=UseNone}

% Review doc.insertPages in the Acrobat JavaScript reference
\begin{docassembly}
\insertPages({
  nPage: this.numPages-1,
  cPath: "graphics/AdobeDon.pdf"
});
\executeSave();
\end{docassembly}

\begin{document}

\lipsum[1-30]

\end{document}