Hi,
to show your pdf file in partial view :
1) You can use embed html tag without need any thrid part script :
<embed src="https://www.adobe.com/enterprise/accessibility/pdfs/acro6_pg_ue.pdf" width="500" height="375" type='application/pdf'>
2) Or you can use
PDF.js, you will find its documentation by clicking on the following link :
Link to PDF.js