But here is the reality check that might save you from a malware-infected download site:
Note: Grupo Chespirito released a series of modern "diaries" under a slightly different name. Search for "El Diario de El Chavo (Chespirito)" on Amazon Mexico or Buscalibre. These are legal ebooks, though they sometimes lack the original 90s illustrations.
Instead, invest in the memory of Roberto Gómez Bolaños. Buy a used copy. Hold it in your hands. Smell the old paper. El Chavo wouldn’t steal a book from the neighborhood bookstore, and neither should you.
If you have typed "El Diario del Chavo del Ocho Roberto Gomez Bolanos pdf" into a search engine, you are not alone. This specific search query trends thousands of times a month across Latin America, Spain, and the US Hispanic community.