Malicious PDF Links Hidden in Text Message Scam Impersonating US Postal Service

SC World reports:A new phishing scam targeting mobile devices was observed using a "never-before-seen" obfuscation method to hide links to spoofed United States Postal Service (USPS) pages inside PDF files, [mobile security company] Zimperium reported Monday.
The method manipulates elements of the Portable Document Format (PDF) to make clickable URLs appear invisible to both the user and mobile security systems, which would normally extract links from PDFs by searching for the "/URI" tag. "Our r