Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8057c1451c4461…

MALICIOUS

PDF

46.5 KB Created: 2021-06-08 14:44:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-18
MD5: eed1448532ecbf6b39c6acbf578824cc SHA-1: 5905f4447c92a62953cff5f02a572de7008eb786 SHA-256: 5d8057c1451c4461249a9b96a4050a854e8f1f773f1196b8c75e4d67a0cbac69
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/how-to-hack-roblox-accounts-2021-game-hack In PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/earn-robux-today_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-robux-script_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/rewards-robux_GM431946152.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
font_00_sfnt_off000052e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52E2 26688 bytes
SHA-256: 51f5f9c1348c0059486ab0ca4cf7a5b9fecc503863d9a5bd1e105de154beb5c5
font_01_sfnt_off000090c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90C1 18992 bytes
SHA-256: 91904dcb98687fcf58c7b52e545a9fbf658b3e4d1998331468638ebaf1d03505

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