According to a footnote in What Luther Says, he preached at least three sermons on the Apocrypha Book, Ecclesiasticus [also known as Sirach] 15:1-9, which was a lesson for the Day of St. John the Evangelist, December 27. The footnote goes on: "The Council of Trent (1545-63) arbitrarily declared the Old Testament Apocrypha canonical. Meanwhile Luther had indeed also translated them for his German Bible, but had superscribed them: 'Books that are not to be regarded as the equal of Holy Scriptures, but are nonetheless profitable and good to read.'" (p. 1512)
A Wiki article on "Luther's Canon" it says:
Luther considered Hebrews, James, Jude, and the Revelation to be "disputed books", which he included in his translation but placed separately at the end in his New Testament published in 1522. This group of books begins with the book of Hebrews, and in its preface Luther states, "Up to this point we have had to do with the true and certain chief books of the New Testament. The four which follow have from ancient times had a different reputation."
And it further quotes Luther:
St. John's Gospel and his first Epistle, St. Paul's Epistles, especially those to the Romans, Galatians, Ephesians, and St. Peter's Epistle—these are the books which show to thee Christ, and teach everything that is necessary and blessed for thee to know, even if you were never to see or hear any other book of doctrine. Therefore, St. James' Epistle is a perfect straw-epistle compared with them, for it has in it nothing of an evangelic kind."
Thus, we might think that Luther's view of and comments about the Apocrypha puts them in the same category as James, Hebrew, Jude, and Revelation. Lutherans do not consider all biblical books to be of equal value in determining our theology.