Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e57ffef0a74e82…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 10:20:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 78df770667741076d50586d00bd59240 SHA-1: 664625343faf03a4ed3a8e124c75a079ab1ccf6e SHA-256: d3e57ffef0a74e8214ca641a6b0db6c693e01aac669853890a171c4696c39062
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/free-robux-no-verification-no-survey-game-hack In PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/pokemon-go-free-6th-gen_GM1094591345.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/claim-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/game-toolbox_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-official-page_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-spins-free_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_004_off00004e6e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E6E 24612 bytes
SHA-256: 4a44c9ac0ff403c18ddf0f01d4c93502cac7a59d19dfaf9a9e0007d23a0defe0
font_01_sfnt_off00008708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8708 18892 bytes
SHA-256: 71091a6cc5ee2467f7d55b23aad8276d14a961c51a29e0f15aa3bcc69cbd56da

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