Create Backlinks Injecting Tool From Any Website

I do not know how this works. but i know its possible since one of my friend has this type of tool in which he scrape any niche relevant site and inject backlink to existing content. he doesnt reveal the tool though. it only take few minutes to scrape and inject backlinks to any site. it seems like illegal work. but he manages to get good backlinks from any niche he wants. here are some links he made using his tool. [login to view URL] [login to view URL] [login to view URL] Again this is not backlink finding tool. this is a backlinks creating tool. please bid if you understand the project.