what are the pictures that made you say it is mold ?
What I have said is that
I can not determine from the photos (insufficient magnification) if it is mold or not. I studied microbiology for years. I can't tell from the photos. Others are apparently more confident of their inspection of the photos than I am.
I did examine all of each photo. When I say that I don't see your area of interest, that means that I didn't see anything peculiar or unusual.
Burning of tobacco destroys any mold toxins. Mold spores are
everywhere in my environment and your environment. So we touch mold all the time. That is not a risk. Since your humidity is so low, the aroma of mold is probably not a familiar smell, and there is no way for me to describe it to you.
To determine without doubt whether or not it is mold, take the leaf to a local microbiologist or laboratory with a microscope. (I visited some in Riyadh many years ago.) But personally, I would not worry so much about it. [When you purchase commercial cigarettes, you never get to see the leaf in its natural state, or even what foreign materials have crept into shredded cigarette tobacco.]
All tobacco has peculiar looking spots and regions. It's just the way it is. Sometimes it is simple discoloration or bruising from the handling process; sometimes it's mold. (Shipping through an environment in which the package may be subjected to dramatic swings in temperature can cause a closed bag of tobacco with proper moisture content to dry in some regions, and condense moisture in others--possibly leading to mold. So I would not be too surprised to see a bit of mold within tobacco shipped to Saudi Arabia.)
Although my thought is that tobacco itself poses a greater risk to you than handling or smoking a bit of possible mold on the leaf, for your own psychological comfort, you can just tear away the ugliest areas, and discard them. I do that with my own home-grown tobacco whenever I'm not confident that a portion of a leaf might not spoil the aroma when smoked. The risk from burning moldy tobacco is insignificant. But burning moldy tobacco smells bad.
Guarantees? None here.
Bob