This paper documents step by step instructions for intercepting TOR users via proxies and using the BeEF framework. It takes injection and proxying attacks on TOR to another level and is a very useful read.
You can download it from the following link: https://packetstormsecurity.com/files/download/115516/jackin-tor.txt
Source: https://packetstormsecurity.com/files/115516/Jackin-TOR-Users-Via-Evil-Proxies-And-The-BeEF-Framework.html