How to upload PDF in images and Videos section?

[sekhar_n]

i have to show PDF beside the images in product detailed page

[Binod Yadav]

Hello @sekhar_n 
This module to allow additional file types in the WYSIWYG editor.
https://github.com/experius/Magento-2-Module-Experius-WysiwygDownloads

OR
Use any third party extension.

https://www.mageplaza.com/blog/how-upload-product-attachments-magento-2.html