Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f821748353091a…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 18:53:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-12
MD5: c67eb451094429f8088e09dfc569d09d SHA-1: e7f1227e7ec9d30eb40ec908c9056e854f348a35 SHA-256: f2f821748353091a22beda3fdac5bbd29f2c1106ecdcdf5c64ea0821fb263fc0
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.co/app/431946152/derp-face-roblox-hacked-game-hack In PDF document text
    • http://knjiznica-oroslavje.hr/files/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/roblox-tycoon-cheat-codes_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/roblox-shirt-texture-free-shipping_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-hack-into-an-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/i-love-cats-t-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-hack-for-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/pokemon-go-free-exp_GM1094591345.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/bloxawards-com-earn-free-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_off00002ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA4 22376 bytes
SHA-256: 2254f52dcda751c1d77fad42b0286bc7f6260109dd89987db466b22fdfe39a54
font_01_sfnt_off00006087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6087 19340 bytes
SHA-256: 5bdc9337ea9062b9c6dd45b3d644692a142e43c717a76d0d3cafba663f32377d

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