Malicious PDF — malware analysis report

Static analysis result for SHA-256 42514fb8b25ce264…

MALICIOUS

PDF

42.5 KB Created: 2021-05-13 23:07:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: c0a0e09f290b5950d1ed7e8552731034 SHA-1: 609fa23a16512660116a98ce58f4af94e78b40a1 SHA-256: 42514fb8b25ce2644cb3b8ae3a1a03a59ca18f9e6e0c94f46d54db7f2418f286
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/479516143/minecraft-launcher-download-free-game-hack In PDF document text
    • http://paro.net.ua/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://paro.net.ua/images/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/how-to-get-free-robux-gift-cards_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
stream_003_off00004985.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4985 25168 bytes
SHA-256: 1eab6bab0686548c1a55befcea16f153c609d584c7ee84e578c840fea8b16902
font_01_sfnt_off000082de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DE 18596 bytes
SHA-256: 0083e9ea94e8b99a1375f6b10a216971855eda4d393b5dd1b08efbb2a64bd6dc

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