Was this an easy fold?

Ultimate Bet 0.05/0.10 Hold'em (8 handed) FTR converter on zerodivide.cx

Preflop: Hero is BB with K[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img]. MP2 posts a blind of $0.05.
UTG+1 calls, <font color="#666666">1 fold</font>, MP2 (poster) checks, <font color="#666666">1 fold</font>, Button calls, SB completes, <font color="#666666">1 fold</font>, MP2 calls, Button calls, SB completes.

Flop: (5 SB) 3[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, MP2 folds, Button calls, SB calls.

Turn: (4 BB) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, Button calls, <font color="#CC3333">SB raises</font>, Hero calls, Button calls.

River: (10 BB) A[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets</font>, Hero calls, Button folds.

Final Pot: 12 BB

Results in white below: <font color="#FFFFFF">
SB has 6d 7d (two pair, sevens and sixes).
UTG doesn't show.
UTG+1 doesn't show.
Outcome: SB wins 12 BB. </font>

I'm not sure if I should have folded this on the turn after he raised me or on the river. I stayed with it even though I was pretty sure I was beat. How should I have played it? (BTW, I have no reads on anyone, I was multitabling and doing other stuff while playing, and I still need to buy PT, so I'm sorry about that.)

Looking back on it, what I see is that I still had 5 outs going to the river, but my odds were only 7-1 after he raised me. So that seems like a borderline call to me. I don't know if I could have folded it on the river.