MAL-2026-12954

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-independent-bnpl-documents/MAL-2026-12954.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12954
Published
2026-08-05T14:45:09Z
Modified
2026-08-05T15:51:14.780413711Z
Summary
Malicious code in bnpl-blocks-independent-bnpl-documents (npm)
Details

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

Source: amazon-inspector (3a6696fe044c6853369150682d33490cf557f26081c7143ed87f7a3624dda53d)

On require of bnpl-blocks-independent-bnpl-documents, index.js loads support.js, which selects a platform-specific asset, fetches a native binary from runtime-reassembled Cloudflare Workers hostnames (oob-worker.cf10{0-3}-*.workers.dev) with a DNS-TXT chunked-base64 fallback to fragments joining to *.dl.wel1.ru, writes it to /tmp or %TEMP% under a disguised name (.cache<hex> or dotnetdiag<hex>.exe), chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe. Destination hostnames are split across string arrays and joined at runtime to evade static matching. lib/telemetry.js ships a second, equivalent SDK-styled implementation of the same dropper (HTTPS+DNS transport, base64 chunk reassembly, chmod 0755, /bin/sh spawn) that is not reached from index.js in this version but is present in the tarball. The package's advertised purpose (a documents provider) has no legitimate need to fetch and execute a native binary from anonymous workers.dev hosts, and the 'analytics'/opt-out framing is cover-story.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T14:45:09Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-015427",
            "import_time": "2026-08-05T15:19:50.797487262Z",
            "sha256": "3a6696fe044c6853369150682d33490cf557f26081c7143ed87f7a3624dda53d",
            "versions": [
                "35.6.6"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-independent-bnpl-documents

Package

Name
bnpl-blocks-independent-bnpl-documents
View open source insights on deps.dev
Purl
pkg:npm/bnpl-blocks-independent-bnpl-documents

Affected ranges

Affected versions

35.*
35.6.6

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "bnpl-blocks-independent-bnpl-documents-35.6.6.tgz",
            "hashes": {
                "sha512_sri": "sha512-2h3Y0L9DOU70MbK/Dmya5wZMFlDAcGpVqwubt6lMdx+YTbODfFxG6/kMDa/BfjeLufmht32fxq6LNwN/+E4tBg==",
                "sha1": "e69ae44115d5e933f60340ba0cfc2b4c196de29c"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "45b1889a15a670198bb0d7e58717541af65bf6633380c298fa5ca5881f73134c3b2efc",
            "sha256": "338f9feca23ae53a68fc457b1bbf56daa4e763b9be94b3b0c872c00a544e2185",
            "path": "_support.js"
        },
        {
            "tlsh": "64835056566a142186b2b368df234107ff3685272642429dbafc82dc1fbd72092a5ffc",
            "sha256": "81623633b870eeaae37b8a853387f2551433040ce5b804d9cadfcf6759ba732a",
            "path": "lib/telemetry.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-independent-bnpl-documents/MAL-2026-12954.json"
cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]