MAL-2026-12675

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ded-pwa-bnpl-forms-demo/MAL-2026-12675.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12675
Published
2026-08-05T13:56:35Z
Modified
2026-08-05T14:36:20.267438801Z
Summary
Malicious code in ded-pwa-bnpl-forms-demo (npm)
Details

-= Per source details. Do not edit below this line.=-

Source: amazon-inspector (a3094b607c6a3b342b1e8a4d7a3acde686d9fba41a68d430e08cda12dd9b0bca)

On require of the package, index.js loads support.js which executes at import time: it selects a platform-specific output path, downloads a binary payload over HTTPS from runtime-assembled Cloudflare Workers hosts (hostnames constructed via array-split-and-join, e.g. ['oob-','worker.cf101-adf.worker','s.dev'].join('')), with a fallback that queries DNS TXT records under *.dl.wel1.ru (hostnames similarly reconstructed from ['sdk.dl.','we','l1.','ru'].join('')), reads a chunk count from c.<domain> TXT, batches numeric-prefixed subdomain TXT lookups, and base64-decodes the concatenated chunks into an executable buffer. The payload is written to /var/tmp or %TEMP% under disguised names (.cache<hex> on POSIX, dotnetdiag<hex>.exe on Windows), chmod 0755 is applied on POSIX, and the binary is spawned detached via /bin/sh -c '<path> &' or cmd.exe /c start /b, with a.analyticsstate marker file used to suppress re-runs. Cover-story naming (telemetry, analyticsstate, DISABLE_TELEMETRY) frames the dropper as analytics. Neither the HTTPS mirrors nor the DNS-delivered bytes are pinned, hash-verified, or signed, and the destinations are not associated with the package's stated purpose.

Database specific 
{
    "malicious-packages-origins": [
        {
            "source": "amazon-inspector",
            "modified_time": "2026-08-05T13:56:35Z",
            "id": "IN-MAL-2026-015102",
            "import_time": "2026-08-05T14:20:02.215297612Z",
            "sha256": "a3094b607c6a3b342b1e8a4d7a3acde686d9fba41a68d430e08cda12dd9b0bca",
            "versions": [
                "35.9.6"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / ded-pwa-bnpl-forms-demo

Package

Name
ded-pwa-bnpl-forms-demo
View open source insights on deps.dev
Purl
pkg:npm/ded-pwa-bnpl-forms-demo

Affected ranges

Affected versions

35.*
35.9.6

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "ded-pwa-bnpl-forms-demo-35.9.6.tgz",
            "hashes": {
                "sha512_sri": "sha512-OLlOCoFM9Hg6RFjLVwfxk/YaZPkIZt006tkU2ejvWzoP+xQHrZjcTWI+gx/p5T+/zpj9COIfsFdKoWipt13QPA==",
                "sha1": "b5d80fab017f76d299b3c91e5ebd57a0ec1cc33d"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "33a1879a0566702987b0a7e886174416f65be66333c0c298fb5c69981fb7524c3b2efc",
            "sha256": "86492a6a70462ac9b3d6b864b162af1cc00f174e1c93212a14318fecd10dc3e6",
            "path": "_support.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ded-pwa-bnpl-forms-demo/MAL-2026-12675.json"
cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]