One option you have here is to look at a DPI tool which could give you the detail that you want. A DPI tool can look at HTTP headers and extract information like URLs and URIs. There are a few systems out there in this space and we develop one called LANGuardian. It plugs into a SPAN or mirror port and is ideal for troubleshooting WAN or Internet issues.
Short video showing the system in use - Find out what users are doing on the Internet - YouTube
LANGuardian can also integrate with your SolarWinds Orion deployment so you can view the output from both systems through a single console. This video shows some examples of this in action - NetFort LANGuardian & Solarwinds Orion NPM - YouTube http://www.youtube.com/watch?v=S0KFbBoWsqg
Finally, one of our engineers is in Dubai on Thursday week and could call in if it suited to discuss your requirements and do an onsite demo.