anyone can explain to me?

I try for send my ambercoin to c-cex. my address ambercoin is AK4wZs5y3gutAHNjB9sCmpY1KDzLG5uQTY, but when sending suddenly there is an anonymous address
AQG7QaB1sB7rZERtuybxj1woUevigLphZn which I do not know with a status 672.0880451 AMBER has sent.
I'm never send to this address (
AQG7QaB1sB7rZERtuybxj1woUevigLphZn) and I 'm never send ambercoin with multiple address (one-to-many).
this incident happen in the last morning. this is make me sad

though not much, but also not a little
this is my transaction in wallet
Status: 1249 confirmations
Date: 10/7/2015 07:49
To: AQG7QaB1sB7rZERtuybxj1woUevigLphZn
Debit: -672.0880451 AMBER
To: amber c-cex AK4wZs5y3gutAHNjB9sCmpY1KDzLG5uQTY
Debit: -1.00 AMBER
Transaction fee: -0.0001 AMBER
Net amount: -673.0881451 AMBER
Transaction ID: c48504f5f3a9bc8217d6e77dee367dbb40a8b64eb88b6d3219993d6fe489ea7d