Malicious PDF — malware analysis report

Static analysis result for SHA-256 f874a44908311086…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 14:34:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 0a323f292ee2dd935e70a8a7a69eab47 SHA-1: b3e27ff64f84e1a8e5c3e70bbdc1def5ef91fe91 SHA-256: f874a44908311086c62d981db86bfa2dcba6ef1bf93f8d2e275d97ae205a636d
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/robux-hack-no-verification-2021-game-hack In PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-cheats-android-robux_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/best-free-level-7-executor-free-for-roblox-2021-august_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/check-cashed-hack-not-roblox_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/assasin-roblox-auto-farm-hack_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-casper-free-download_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-do-you-get-free-robux-easy-way_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-hack-de-robux-version-2335202112-apk_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/hoq-to-buy-anything-from-catalog-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-generator-no-survey-no-download-no-password_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/hacks-para-roblox_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_off00002e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E93 22248 bytes
SHA-256: 434f352c7a9dd9541dc2603b8375503e9f0be7818de96805fa61d5877f47c10b
font_01_sfnt_off00006009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6009 19484 bytes
SHA-256: 3448f6969381cb11d06e86372e71d5fc299265ae07641e2766db33af9e33a7f7

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