Hi Phil,
Sorry for the delay in response.
Adobe Scan application by default saves the scanned PDFs in Adobe Document Cloud.
It is not possible to access the scanned PDFs directly from CC files folder.
There is no option to change the location to store PDF or the preference settings.
You can either access the PDFs online on Document Cloud here Adobe Document Cloud or from the Adobe Scan application.
You can also directly access these PDFs from Adobe Acrobat Reader or Adobe Acrobat DC applications.
For more details, you may refer this help document Adobe Scan FAQ.
Let us know if you have any questions or need any help.
Regards,
Meenakshi