There is no such thing in Shari`ah as sham marriage (on paper). The sin is further compounded if it is done in order to do something that is prohibited, such as one who uses it to avoid giving people their rights or paying debts to them, or if a woman uses it to get help given to divorcees by a state or institution, or so that she can live in a non-Muslim state where it is not permissible for her to reside, and other invalid, forbidden aims.