The existence of the Grimoire of Pope Honorius was known through references in other medieval texts, but the actual manuscript was thought to be lost. However, several modern manuscripts have been discovered, which are believed to be based on the original text.
As for PDF versions of the Grimoire of Pope Honório, I couldn't find any reliable sources that offer a free or public domain PDF of the entire text. However, you may be able to find excerpts or fragments of the grimoire online.
You're looking for information on the "Grimório do Papa Honório" (also known as "The Grimoire of Pope Honorius").