I have tried by using
iframe
<iframe src="http://prawnpdf.org/manual.pdf" sandbox="allow-same-origin" style="width: 100%; height: 100%;">
Resource interpreted as Document but transferred with MIME type application/pdf: "http://prawnpdf.org/manual.pdf".
Implementation of a PDF file in your HTML:
<embed src="http://prawnpdf.org/manual.pdf" style="width: 100%; height: 100%;"/>