Malicious PDF — malware analysis report

Static analysis result for SHA-256 4254ae20ca08dc5e…

MALICIOUS

PDF

35.6 KB Created: 2021-07-05 08:16:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: be7132e63a5f308ce5d5fe0c4dc8b81e SHA-1: 022b429f712a2558c192e810206b4fb54c2a073e SHA-256: 4254ae20ca08dc5eec9f2b35e49c8004f7ab8fa7cbb3da0dd8df1b1b1f738d37
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-spins-coin-master-without-survey-game-hack In PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-robux-in-ios_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/roblox-but_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-tiktok-likes-and-views_GM835599320.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/roblox-rc7-free_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/robux-without-verification_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-gift-hack_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
font_00_sfnt_off000034e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34E6 22316 bytes
SHA-256: 9584bc1b093bc708485d8bf0fce29e717336f66c8e6ace6f0cfd0b21a3f90242
font_01_sfnt_off000066ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BA 18972 bytes
SHA-256: e05a6f41159f4979858c0ff2adddce7f3fedef504292efbc8f8931e1012c2747

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