One of the most damaged aspects of poor-quality files are the sigils (seals of the demons). In Goetic practice, the sigil is the spirit's "address." The magician stares at the sigil to facilitate a telepathic connection. If the sigil in your PDF is blurred or incorrectly drawn, the ritual will fail.

When searching for a "solid" PDF, reviewers suggest looking for specific criteria: The Mathers Edition : Most English PDFs are based on the S.L. MacGregor Mathers