I did a little googlfying myself on this and at least one site I found, which claimed to be authoritative, said that Andrew Probert made three copies of this prop for the film. They each had identical covers, but the interiors were just described as being a real comic book that the new cover was glued onto. And one site had a photo of the itnerior of one of these books, an interior which was very clearly a Gladstone reprint of an EC book.
That, of course, is impossible since Gladstone didn't reprint EC stuff until 1990; I think the photo was of a recreation of the prop that somebody made. But it's very possible that the three versions Probert made for the film may have different interiors if he just used a random comic. And one of those could have been Weird Fantasy #7 or some reprint of it.
Kurt's Dial H was an interesting guess as that series did have a boy/girl team-up as the lead. But as he says, it's not from Dia H. I only have one issue of that run in Adventure, but I can tell even from this tiny thumbnail that the art on this isn't nearly bad enough to be 80's Infantino.
One possibility is that this is an Infantino layout with finishes by someone from the Filipino school, which may reconcile both options being bandied about here. Infantino did pencils on the mid-80's TV adaptation V, with inks by DeZuniga and it's almost unrecognizable as Infantino work unless you read the credits.