MAL-2026-11540

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/hubert-application-get-document-preview-am/MAL-2026-11540.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-11540
Aliases
  • GHSA-7c6g-rhc6-239f
Published
2026-08-04T22:08:41Z
Modified
2026-08-06T01:21:04.759486911Z
Summary
Malicious code in hubert-application-get-document-preview-am (npm)
Details

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

Source: amazon-inspector (b5e887ef3c3509ebfe43d231ff354e4e0d7f8eb20c9da05389324446d44fc589)

On require() of the package, index.js loads setup.js which selects a platform key, downloads a native binary from one of four hardcoded workers.dev endpoints (oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT fallback channel over *.well1.site (tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, win.dl.well1.site), writes the payload to /tmp or %TEMP% under deceptive names such as dotnetdiag<rand>.exe and.cache<rand>, chmods it 755, and spawns it detached via /bin/sh -c or cmd. The hostnames are reconstructed at runtime by array.join('') to evade static analysis; the DNS-TXT channel reassembles base64 chunks from N.<domain> TXT records as a covert transport when HTTPS is blocked. No hash or signature verification is performed, and the destinations are unrelated to any legitimate package publisher. A second self-contained dropper bundled in lib/telemetry.js (framed as an 'Analytics SDK') contains duplicate machinery — require("child"+"process"), base64 chunk decoding, fs['chmod'+'Sync'] to 0755, and cp.spawn('/bin/sh',['-c', filePath+' &']) — providing an alternate execution path.

Source: ghsa-malware (9fb6aabe64feb9fbd337743b271809defa5a4e781526ee80c08aa6e01fb09bdf)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Database specific
{
    "malicious-packages-origins": [
        {
            "source": "amazon-inspector",
            "modified_time": "2026-08-04T22:08:41Z",
            "sha256": "b5e887ef3c3509ebfe43d231ff354e4e0d7f8eb20c9da05389324446d44fc589",
            "id": "IN-MAL-2026-011349",
            "versions": [
                "20.4.6"
            ],
            "import_time": "2026-08-04T22:30:12.066491598Z"
        },
        {
            "source": "ghsa-malware",
            "modified_time": "2026-08-05T16:33:17Z",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "id": "GHSA-7c6g-rhc6-239f",
            "sha256": "9fb6aabe64feb9fbd337743b271809defa5a4e781526ee80c08aa6e01fb09bdf",
            "import_time": "2026-08-06T00:58:53.311120124Z"
        }
    ]
}
References
Credits

Affected packages

npm / hubert-application-get-document-preview-am

Package

Name
hubert-application-get-document-preview-am
View open source insights on deps.dev
Purl
pkg:npm/hubert-application-get-document-preview-am

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

20.*
20.4.6

Database specific

cwes
[
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-ttV/GnfMwhvmALfInUm0uPP8gDS4m/2257mv+nbpJTMJeFY0f83QyZ2XYKeqWbBSD0jZGnkHmdsGILCuCWutvQ==",
                "sha1": "9ba93d807417c48a3317edc9bd06c36fc4ac24eb"
            },
            "filename": "hubert-application-get-document-preview-am-20.4.6.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "setup.js",
            "sha256": "471fafc705bff59a8a1b42a76db1b453fa5be353ef5ad0ef26eaa7aada48c49e",
            "tlsh": "8da1a8961679702d4bb097e4c72b4415f65be6a3378082d1fb5ca5980f771288371efc"
        },
        {
            "path": "lib/telemetry.js",
            "sha256": "4a4db6effeb29e0af20df7963766af88fd4495d55fdae9e36cac844b2b5d2abf",
            "tlsh": "ab835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"
        }
    ]
}
source
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/hubert-application-get-document-preview-am/MAL-2026-11540.json"