Malicious PDF — malware analysis report

Static analysis result for SHA-256 af22774dfd90c655…

MALICIOUS

PDF

27.1 KB Created: 2021-05-10 19:40:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 652292cc25b05a144ef86c2d835bab34 SHA-1: b3e1d0c8f8b326fe2ba4f5238927e612c7391686 SHA-256: af22774dfd90c655624a1ae79c5c323af5549162f41e7e88b9c83f27f5fbd92b
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9760

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/431946152/roblox-top-game-hack In PDF document text
    • http://elibrary.perludem.org/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/add-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-2021-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_off00002094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2094 18876 bytes
SHA-256: 7994d3f3417f49f127d273179514526b3ed55f5eee4d75ae61d5c3b5d8bddc56
font_01_sfnt_off000047d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47D8 17960 bytes
SHA-256: 1b957a4d42808d881beaaaa14f2e89e39890b0253cbeb1b05cb339fd6844851d