Sign up for Office 365
Learn more about Office 365
Do you mean you can insert a PDF file into the contact page when you create a new contact via Outlook clients? If yes, I’ve done a lot of tests, and when I inserted a pdf file into the contact page, and clicked Save & Close. Then I signed into Office 365 Outlook Web App to review the contact information, and there was not an attachment in the contact information page.
Also, I tried to create a new contact on Outlook Web App, and noticed there was not a button to allow me to insert an attachment.
Therefore, the feature you want is not supported at this time, and sorry for the inconvenience caused. For the further improvement of our product, please submit feedback here. If the service is requested frequently, the product team may include it in future product releases.