It's becoming all-too-common for these threads in this forum, so I'm making a sticky for it. All you do is come in, list information about the Pokemon, and ask whether or not it's hacked. I'm banking on you knowledgeable people who usually answer to come here and answer for us. :)
A possible format to frame your question would be this:
Gen this is concerning:
Keep in mind that the more information you give, the easier it is to spot a hack, usually.