Necrosadism

... necrosadism, arousal from mutilating a corpse. All these features were typically displayed by Jack the Ripper, the notorious late nineteenth century killer.

Necrosadism (sexual gratification from the mutilation of corpses). These terminologies often overlap and, in Bertrand's case, they form part of a sexual trilogy in which necrophagy and necrosadism combine to create necrophilia[…]

[…] Correlated with necrosadism. / Necrophilia: Arousal through engaging in sexual acts with or being intimately connected to human corpses. Correlated with numerous necrophilic spectrum behaviours, including necrosadism. / Necrosadism: Arousal or preoccupation with committing indignities to or defiling and/or mutilating and humiliating dead bodies. Correlated with erotophonophilia, odaxelagnia, and cannibalistic behaviours not otherwise classified.