This is a nasty scammer who is trying to frighten you into opening the attachment, which is a .zip file containing malware. DO NOT OPEN the attachment.
If you have recently had a blood test, please rest assured that this is a scam and you will need to contact your doctor to get your results in the usual way.
We have been sent a sample of your blood analysis for further research.
During the complete blood count (CBC) we have revealed that white blood cells is very low and, unfortunately, we have suspicion of a cancer.
White blood cells 1200, low; hemoglobin 12; normal platelets 19000, low.
We suggest you print out your CBC test results and interpretations in attachment, below, and visit your family doctor as soon as possible.
Dr. Avery Ernie.