You're likely referring to H.R. Giger's design work for Frank Miller's "The Dark Knight Returns" and "Sin City," but I think you might be confusing it with another project.
By H.R. Giger.
Here's what I could find:
The copyright laws protect H.R. Giger's work. hr giger 39s necronomicon pdf verified
If you're looking for the PDF, I have some bad news: You're likely referring to H
A fascinating topic!