Well for that matter, originals of anything - including Greek (except for fragments of either). Everything is now copies of copies.
But there is Shem-Tov's Hebrew Matthew, and a possible Hebrew manuscript of Acts alluded to.
Even so, the missing originals doesn't prevent scholars from restoring the original Hebrew meanings to the Greek translations "coined" to express the Hebrew meaning as much as possible, but at times failing.
There are thousands of copies of the Greek New Testament—it is orders of magnitude better attested than any other ancient literary work—and so the contents of the autographs can be reconstructed to a very high degree of accuracy.
Of the alleged Hebrew original, however, we have no copies of anything.
But there is Shem-Tov's Hebrew Matthew, and a possible Hebrew manuscript of Acts alluded to.
The Shem Tov Hebrew dates from the 14th century, not the first, and "possible" is not "actual."
As regards an original Hebrew New Testament, you have nothing but conjecture and supposition.