Malicious PDF — malware analysis report

Static analysis result for SHA-256 86fdae1635a6ef8b…

MALICIOUS

PDF

13.1 KB Created: 2021-07-04 20:59:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 036ea300e5bfbe10431869f237a6f876 SHA-1: e4e2ca558316948aef69be9a53c50428e9655521 SHA-256: 86fdae1635a6ef8bc9ab42d71ae6a0b35b82706e4a3ba00bd9f40958b2b4015b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appear to be free generators or hacks for popular games and apps. The primary link, http://netcdn.tw/app/835599320/when-tiktok-free-download-game-hack, is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious websites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9842

Heuristics 3

  • 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.
  • 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/835599320/when-tiktok-free-download-game-hack In PDF document text
    • http://katalog.gemalibrary.net/repository/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-live-giveaway-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-high-school-2-money-cheats_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/20210-pubg-uc-in-indian-rupees_GM1330123889.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-promocode-that-gives-you-750-000-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/hack-roblox-hack-online_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/pokemon-go-free-hack-apk_GM1094591345.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-roebucks_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/robux-link_GM431946152.pdfIn PDF document text

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