Yes. You can now show a PDF inside a form using the File Preview component.
The File Preview component lets you embed a live preview of a SharePoint file directly in your form. This works well when respondents need to view a supporting document while completing the form, such as a PDF, PowerPoint presentation, Word document, image, spreadsheet, policy, drawing, or report.
For the best form experience, we still recommend adding important information directly into the form using a Contentcomponent where possible. Content added directly to the form is easier to read, works better on different screen sizes, and keeps the form experience consistent.
However, if you need respondents to view the original file, you can use File Preview.
To use it:
Add the file as a SharePoint File data source.
Choose File preview as the use.
Add the File Preview component to your form.
Select the file source you created.
The preview is loaded live from SharePoint, so users can view the latest version of the file without leaving the form.
A few important notes:
File previews require an online connection and will not work offline.
File previews are not yet supported on public share links.
File previews do not appear inside generated PDFs