<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<div class="container">
<div class="row">
<h2>Showing PDF in popup modal preview using Bootstrap Easy Modal Plugin</h2>
<a class="btn btn-primary view-pdf" href="http://www.africau.edu/images/default/sample.pdf">View PDF</a>
</div>
</div>