A classy new injection marketing campaign has been uncovered, concentrating on cellular customers by way of malicious third-party JavaScript to ship a Chinese language adult-content Progressive Net App (PWA) rip-off.
This assault, which redirects customers to websites like hxxps://xjdm166[.]com, leverages the distinctive capabilities of PWAs to retain customers longer and evade conventional browser safety mechanisms.
In contrast to typical phishing makes an attempt, this marketing campaign employs a full-blown PWA as its touchdown web page, indicating a shift towards extra persistent and misleading supply strategies.

Safety researchers be aware that PWAs, usually neglected in client-side safety, are more and more turning into a vector for such exploits attributable to their capability to function with app-like performance immediately in browsers.
Cellular-Solely PWA Scams on the Rise
The assault begins with the injection of malicious scripts into compromised web sites, usually disguised as novel studying platforms with titles like “Haitang Literature Community” and “Shenma Novel Community.”

These scripts, such because the loader hosted at hxxps://xxsmad6[.]com, are designed to filter out desktop customers and solely goal cellular units.
As soon as a cellular person accesses an contaminated web site, the script checks for a viewport meta tag; if absent, it injects one to optimize cellular rendering.
Following this, it overlays a darkish semi-transparent advert with misleading visuals fetched from toutiaoimg[.]com, alongside a faux shut button.
Clicking both the picture or the button triggers a redirect to the PWA rip-off web site in a brand new tab, demonstrating a basic bait-and-switch tactic.
Using exterior assets from domains like xxsmad6[.]com for belongings and xjdm166[.]com for the ultimate payload underscores the multi-layered nature of this marketing campaign.
Moreover, the obfuscated code present in newer iterations of the assault, which decrypts into hyperlinks to grownup content material zones on akav50.prime, reveals an intent to additional masks malicious exercise.
Technical Breakdown
The marketing campaign’s mobile-only focus permits it to bypass many detection mechanisms that depend on desktop-based evaluation or server crawlers.
Safety specialists have noticed vital visitors to those malicious domains, suggesting a widespread operation.
Moreover, throughout evaluation, glitches within the compromised net functions uncovered hidden frames, resulting in faux grownup web sites mimicking well-known platforms.
These websites in the end push malware downloads for Android and iOS units, with samples displaying alarmingly low detection charges on platforms like VirusTotal solely 3 out of 63 or 65 distributors flagged the threats.
This low detection price highlights the stealth and class of the assault, as attackers constantly adapt their techniques to use gaps in present safety frameworks.
To mitigate this menace, web site homeowners are urged to carefully assessment and sanitize third-party scripts, implement strict Content material Safety Insurance policies (CSP) to curb inline script execution, and monitor runtime habits for surprising meta tags or exterior requests.
This marketing campaign serves as a stark reminder of the evolving panorama of client-side assaults, the place PWAs have gotten a potent device for cybercriminals aiming to use cellular customers with growing impunity.
Indicators of Compromise (IOC)
Sort | Indicator | Description |
---|---|---|
Area | xxsmad6[.]com | Predominant loader and asset host |
Area | xjdm166[.]com | Closing PWA rip-off touchdown web site |
Area | toutiaoimg[.]com | Picture host for misleading visuals |
Area | akav50.prime | Hosts grownup content material redirect hyperlinks |
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