Yes. You can upload multiple files to any specific record whose name is known. 

  • First, you need to select the object from the "Select Object" drop-down.
  • After selecting the object, you need to select "Search Mode" as "Search" and enter the name of your required record or any keyword associated with the name of your record.
  • All the records associated with that keyword from the selected object will be displayed. You can select your required record and upload files to it. 


PS: View Mass File Upload, Salesforce file upload app on Salesforce AppExchange: https://appexchange.salesforce.com/appxListingDetail?listingId=82cf236b-1ee8-4ea7-aebf-fd0c89fb93bd