@dcorrea - Unfortunately, at this time, https URL filtering is not supported on AOS products. However, you can use ACLs to block HTTPs access by IP address or hostname. This, however, comes with limitations and can become very difficult to manage. However, the NetVanta UTM product line would give you the capability to filter HTTPs requests. If you are interested in learning more about this product, please contact Adtran's Application Engineers at 888-423-8726 or sending an email to firstname.lastname@example.org .
Let us know if you have any other questions.