Upvote:3
Looking at your flight numbers I believe that your first flight is actually a codeshare flight operated by Brussels Airlines.
However, Vienna airport is compact, and the airport website
http://www.viennaairport.com/en/passengers/arrival__departure/transfer
States that 25 minutes is plenty for a a transfer.
When you check in at Brussels you should make sure your luggage is tagged correctly to Amman.