Strange URL appearing when using Google (.dmg in URL)

Lets say I search something and then I click one of the results this URL appears before I arrive to the page I was going to

http://google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CDMQFjAA&url=htt p%3A%2F%2Fespn.go.com%2F&ei=rjxGUb7YB7LJ4AOh3YHoDQ&usg=AFQjCNG45uswPqmBmMN-F_VcX Ypg4N42jQ

Or sometimes it is like this

http://google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&sqi=2&ved=0CC0QnA4oAD AA&url=%23&ei=FX5CUeKYDoPl4AP34YCgAg&usg=AFQjCNF1sHlk2z9QIx28jtvfnGP_UlkifA&bvm= bv.43828540,d.dmg#

Is this normal? I am wondering why the page is ending with .dmg

Immediately after it goes to the webpage I wanted, but these URL's come in before I arrive. It might be a normal part of Google, but the fact that one of them ends in .dmg is kind of alarming to me