The deuterocanonical books had not been considered inspired; at least one of the authors of such even acknowledges that there were no prophets during the intertestate time. Those years are referred to as "silent" and "inter-testate" for a reason.
The deuterocanonical books do not share many of the characteristics of the canonical books: they are not prophetic, there is no supernatural confirmation of any of the apocryphal writers works, there is no predictive prophecy, there is no new Messianic truth revealed, they are not cited as authoritative by any prophetic book written after them, and they even acknowledge that there were no prophets in Israel at their time.
And they laid up the stones in the mountain of the temple in a convenient place, till there should come a prophet, and give answer concerning them. (1 Maccabees 4:46)
And there was a great tribulation in Israel, such as was not since the day, that there was no prophet seen in Israel. (1 Maccabees 9:27)
And that the Jews, and their priests, had consented that he should be their prince, and high priest for ever, till there should arise a faithful prophet. (1 Maccabees 14:41)
And that the Jews, and their priests, had consented that he should be their prince, and high priest for ever, till there should arise a faithful prophet. (1 Maccabees 9:27)