Hitherto I had merely thought myself impeded by the childish simplicity of the little people, and by some unknown forces which I had only to understand to overcome; but there was an altogether new element in the sickening quality of the Morlocks—a something inhuman and malign.
There are no more uses of "malign" in the book.
Show samples from other sources
I glared at her—the woman had maligned me—and then I noticed for the first time the swell in her belly and realized she was pregnant again.
Gillian Flynn -- Gone Girl
But to malign the good name of America’s greatest television judge—that’s below the belt."