Malicious PDF — malware analysis report

Static analysis result for SHA-256 af207fa25765f7f0…

MALICIOUS

PDF

46.5 KB Created: 2021-06-09 07:20:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: dd145e47ee8b2baf84a93fdaadc2aaf2 SHA-1: a33700110c0316343636ca21b9e2d4ac174e6d72 SHA-256: af207fa25765f7f04ee7b853844363487c83ae897f15cd9d79676a2367187f76
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.tw/app/431946152/how-to-get-free-robux-glitch-2021-game-hack.
  • 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/how-to-get-free-robux-glitch-2021-game-hack In PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-without-human-verification-or-email_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/wurst-mc_GM479516143.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/my-robux_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-today_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
stream_004_off000052f5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52F5 27328 bytes
SHA-256: 696887a9bc3960c206c3efefb1b26e59c57255924a5e53ba500296634e1342ca
font_01_sfnt_off00009134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9134 19044 bytes
SHA-256: 1b25d61e2db93a2773797b99444ad84234b0e3415d28efad0836869a9ea45247

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