Not really. A McDuffie... (SPOILERS)
Warning:Spoilers!!!
(I can't do text markup on my phone, so I can't use the special spoiler blocker feature)
Anyway, in the Trivia section, the film is called a McGuffin. It really isn't, though. A McGuffin is a device to try and outsmart the viewers, a false item that you think is important, but actually has nothing to do with the story.
The film, even though it isn't used to solve the case, is not this kind of device. The film IS an important part of the story, it's why the bad guys keep trying to kill her, which is why we have a movie in the first place.
A McGuffin would have it just be a pack of smokes, no film.