Malicious PDF — malware analysis report

Static analysis result for SHA-256 af231b1a046c3ad9…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 18:53:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 26a82a70f6f0cfcc047c9a3a764855c0 SHA-1: 8d4c18392597be0a1cac5189ae51817a5fa1d0cb SHA-256: af231b1a046c3ad964357f0b5565ddefe51e9e63e4d6a1032b9ed2ae16e7d5d2
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/431946152/roblox-cheat-engine-values-game-hack In PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-roblox-mobile-app_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/spin-link_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/how-to-get-any-gamepass-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/military-dave-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/download-roblox-hack-v6-5_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/cheat-codes-in-workout-simulator-i-roblox_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/roblox-the-streets-no-clip-hack_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/minecraft-free-download-windows-10_GM479516143.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_off00003023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3023 22512 bytes
SHA-256: dfc0498df9680427957eabb2802e99a8445ec29835ba475a542683507c109bef
font_01_sfnt_off00006279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6279 19152 bytes
SHA-256: 963c22040f249cc98dd59554eb9d3d816ac452f73f30d76cf72306f7e7b19603

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