Now it is January 2018 .
You're a bit advance (were still on Dec,2017) 
I want to know CoinURL is scam site ? Anybody have faced similar situation ? Usually how long does it take to process a payout ?
Yes, unfortunately they've scammed plenty of users. I'm afraid you just wasted your time.Take a look here (it's in the category of the "SCAM WEBSITES"): https://bitcointalksearch.org/topic/list-bitcoin-advertising-networks-1108616
Furthermore, click the "print" button on the top right corner of the thread > Ctrl + f > Type "CoinURL" > Read the comment and you'll see as you move forward, they turn to be scammers in the end.
