Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2ef2b9f52b7f7f…

MALICIOUS

PDF

46.8 KB Created: 2021-06-08 17:06:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: ff53802aacc354077239d834d60695f6 SHA-1: 3f487350a2a6e908aa4be076726e2342319ed7e6 SHA-256: af2ef2b9f52b7f7f2671f234494ebb9d5386a16c748e019318e06b7d9eba5534
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/fly-hack-roblox-download-working-2021-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-its-raining-men-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/pubg-uc-recharge_GM1330123889.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/rbx-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/tiktok-free-svg_GM835599320.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-apk-mod-free-download_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
stream_004_off000052be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52BE 26360 bytes
SHA-256: 47c12ea8a428e61ee99cfe72c68c834ddde59c517f6cc15ae329724b5c32b4b7
font_01_sfnt_off00008efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFC 20040 bytes
SHA-256: 201acb33018554d4000aba8fccc11799098f94945e44b2fdbc10ed233d9ca5a5

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