Its a paper where the conclusion was written before the research was done.
The research done to prove what they wanted.
I have been involved in papers like this before. If your not into that sort of thing it leaves a dirty taste in your mouth. And its particularly annoying when people start referencing the paper when you know its flawed and targeted research. But its all part of the dirty side of academia and if people pay for research they get what they want if its possible.