Malicious PDF — malware analysis report

Static analysis result for SHA-256 216582443ee0ab66…

MALICIOUS

PDF

42.5 KB Created: 2021-05-11 15:09:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3be7fc27ef4a439d37e4ed2d8eccd224 SHA-1: 6b5820bb4e511473cb53612b8886dd6ba1201ea0 SHA-256: 216582443ee0ab66d1088a741af2edda19e8d9e1c60c9b2a8a2ecbe2ce3e21cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on what appears to be a game hack generator. These links redirect to malicious infrastructure, specifically identified as a redirector. The primary malicious URL is https://netcdn.xyz/app/406889139/300-daily-free-spins-coin-master-game-hack, which is part of a larger campaign involving numerous similar PDF lures hosted on gearestauri.it.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/406889139/300-daily-free-spins-coin-master-game-hack In PDF document text
    • http://www.gearestauri.it/images/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://www.gearestauri.it/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://www.gearestauri.it/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.gearestauri.it/images/free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.gearestauri.it/images/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gearestauri.it/images/getrobux-come_GM431946152.pdfIn PDF document text
    • http://www.gearestauri.it/images/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • http://www.gearestauri.it/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.gearestauri.it/images/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://www.gearestauri.it/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.gearestauri.it/images/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gearestauri.it/images/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://www.gearestauri.it/images/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://www.gearestauri.it/images/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://www.gearestauri.it/images/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.gearestauri.it/images/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://www.gearestauri.it/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.gearestauri.it/images/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gearestauri.it/images/spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://www.gearestauri.it/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a0b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A0B 24648 bytes
SHA-256: f26d915a8c756827fcdc09ed9f312cff313a4a275aa6f3e378e1519343aa427c
font_01_sfnt_off000082c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C5 18656 bytes
SHA-256: 54868513bfe31238ae3395f8478781089c68907253390a8344cb056fc0e1040c

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