Regarding a specific PDF, I couldn't find any information. However, there are various online platforms and archives where you might be able to find Sergio Toppi's works in digital format, including:
Because much of Toppi’s work was originally published in Italian and French anthology magazines like Linus , Corto Maltese , and Alter Alter , finding comprehensive collections can be a challenge. However, recent English translations have made his masterpieces more accessible. Why They Work: Sergio Toppi | Sessions College sergio toppi pdf