No. The Church has always been debating who wrote Hebrews. Multiple theories have been put forwards. Pauline authorship is the most popular but other possible authors were theorized in the early Church. Some attribute it to Luke. Some attributed it to the Barnabas. There were even those who believed Clement of Rome wrote it. The fact is, we don’t know. Almost all modern scholars don’t believe it to be Paul though. To be truthful, the Church has never infallibly defined the authors of any of the books of the New Testament. Catholics may hold modern scholarly views on authorship of the New Testament.