is using premium theme will get me in trouble

i'm starting a blog and i found this premium wordpress theme for free download like the ones here on blackhat world one more thing with the download file here is a .txt document were there is a license (the theme from themeforest)

2ns question : in my blog i'll put torrent books will this get me in some copyrights problems ? if so what will happen ?

please answer somehow this is what keeps me from taking action this type of questions