Malicious PDF — malware analysis report

Static analysis result for SHA-256 f31d4a036e460558…

MALICIOUS

PDF

41.1 KB Created: 2021-05-17 02:50:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3383ba7848947c9833e0a0438b7b25d1 SHA-1: 6bee3cc0de7b3845858e5c62685efd3626287345 SHA-256: f31d4a036e460558be451e4d777717c516252821aa20694f66899660bee540f9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/coin-master-daily-free-spin-and-coin-game-hack PDF link annotation
    • http://www.teapotjewelry.com/images/free-roblox-characters_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coins-master_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000466b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x466B 24528 bytes
SHA-256: 45415179e0ec4dcf05a9cf481ae129ace0609879e32094e875f191c388165ff7
font_01_sfnt_off00007d76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D76 18480 bytes
SHA-256: 323fea871d3154f9ddf991b22fd859b77165b4ee4e2d03de0fe4666202988bbb

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