A user receives an SMS claiming their package cannot be delivered and asking them to install a 'tracking app' from a link. What type of attack is this and what does the linked APK likely contain?

• A.This is a sideloading demonstration and the archive behind the link carries a working tracking client because the courier publishes it outside the store for markets where its listing is unavailable: the risk is the install source rather than the payload and a cautious user can verify the signature before proceeding
• B.This is a smishing attack distributing an Android SMS-stealer or banking trojan as a fake delivery tracking app; the APK likely requests RECEIVE_SMS and READ_CONTACTS permissions to steal OTP codes and propagate itself to the victim's contacts via further smishing
• C.This is a legitimate carrier notification because a delivery message from an operator carries an application link for the recipient to install: the archive holds the courier's own client and the permissions it asks for cover message parsing so the tracking number can be read straight from the inbox