To Send a PDF File From Google Drive to WhatsApp
1. On your Android phone or tablet, open WhatsApp.
2. On the Chats screen, find and tap on the chat of the contact to whom you wish to send the PDF file.
3. To enter the WhatsApp Sharing Menu, hit the Pin icon at the top of the screen on the following screen.
4. Select the Document icon from the sharing menu.
5. Then, to the left of 'Browse other documents,' press the three-line icon.
6. A 'Open from' menu will appear, giving you the choice of selecting a PDF file from Google Drive, Downloads Folder, or Recent Documents.
7. Select Drive to save the PDF file.
8. Tapping on Drive will take you to your Google Drive account, from where you can choose the PDF File by tapping on it. and send it I hope your query resolves