Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f0ee0406307850…

MALICIOUS

PDF

36.0 KB Created: 2021-06-26 12:56:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-13
MD5: de26f2fccb1d91886d8e45ceb89194d2 SHA-1: 1089f2efea1ad04d95ecddac6fee740bba669260 SHA-256: f2f0ee0406307850015c065e44b751ab256dd87729b98f5ef8735f6ef3a7d62c
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/how-tommake-a-roblox-hack-game-hack In PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-codes-on-ios_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-free-2021-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-bloxburg-free-money-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-gun-script-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-download-free-apk_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/cheat-codes-for-dungeon-quest-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-ro-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/can-you-play-minecraft-for-free_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_off000032b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B9 23408 bytes
SHA-256: 61ccf0d6b609e3a7e69ab72db081fa358ef93e5af68d1c0c85ad423fb044bcf8
font_01_sfnt_off0000679d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679D 19080 bytes
SHA-256: d67bf604d5339543114169551c5facc80d28308cd5c17073358f8f23bd3dcea9