Display PDF file into HTML form

Hello Camunda!
I would like to build a html form so that when I upload a file that a preview is displayed, does anyone have an idea how I can create the preview of the pdf file

----------------------------------------HTML File------------------------------------------------------

Customer ID
Amount
<input required
       cam-variable-name="amount"
       cam-variable-type="String"
       class="form-control" />
</div>	   
<div>
<input type="file"
   cam-variable-name="INVOICE_DOCUMENT"
   cam-variable-type="File"
   cam-max-filesize="10000000" />
  </div>