Recruitment companies receive a lot of resumes in Word format, as you’d expect. But it seems that there’s a growing trend of these Word files being infected with some type of malware. Often there is automated software at recruitment companies to forward the resumes to their clients without scanning them for malware.
Hackers have caught onto this and are targeting these companies. They’ve been sending resumes (probably not their own) with backdoor trojans embedded in the document. This gives them a chance to gain access to these networks.
If your work involves receiving many Word documents from the general public put in place a plan to screen these for known malware, and to limit the damage they can do if a new (unknown) trojan gets through. Most security specialists can help with this.