The infringement will disappear from your profile in 14 days
If you make another infringement in 28 days, it will come back. Don't worry about it much, you'll only get banned after 10 infringements
If you think you didn't deserve it, contact
accounts@ppy.sh with as much information as possible (though there is a chance nothing'll happen, since it's only a 5 minute silence, nothing major)
Anyways, such account related issues aren't handled here