We apologize for the inconvenience caused, as per the description above, when you are opening any PDF file, Acrobat is making another folder, Is that correct?
Please check for any pending updates of Acrobat from help>check for updates, reboot the machine after installing the updates and see if this brings any difference.
Try resetting the preferences of Acrobat once, to reset the preferences, refer to How to reset Acrobat Preference settings to default.
If the issue persists, please share the following details:
Let us know how it goes and share your findings.