Ask HN: I got rejected from Facebook, Dropbox, Microsoft, Quora, What's Wrong?

Hi, I'm a student who was applying for a summer internship and got rejected from all the companies to which I applied from the CV phase. Didn't even get to the interview phase. I got rejected from Facebook ( twice ) even with a referral, got rejected from Dropbox, got rejected from Quora, didn't even get a reply from Microsoft. I thought that my resume is good enough for someone in my age but apparently I was wrong. Is there anything that bad in my resume (http://mbassem.com/assets/files/MohamedBassemResume.pdf)? Thank you.