QuickBooks Online (QBO) only supports CSV, QBO, OFX, and QFX files when
uploading bank data into your Online account. Since your bank only provided a PDF copy of the
statement, you'll first need to convert it to one of the supported file
formats.
You might want to check online for any applications that can help you convert a PDF file into the supported file formats.
Once you've successfully converted the statement, you can follow the steps in these articles on how to import them:
Keep us posted if you need anything else with importing bank data. I'm always here to help.