Malicious PDF — malware analysis report

Static analysis result for SHA-256 782021c8c2b4a431…

MALICIOUS

PDF

49.1 KB Created: 2021-06-09 16:50:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 2d00a479996bfc940473241b6be4cbd6 SHA-1: 22bc495cce1464812374d1197cec206e501d6e58 SHA-256: 782021c8c2b4a431da5488d4ecd6a03826e7a19a8e3f22131e309f73f33f80a2
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/how-to-hack-peoples-account-on-roblox-2021-game-hack In PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/tiktok-free-games_GM835599320.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/free-robux-boombox_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/pubg-uc-earning-app_GM1330123889.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/how-to-download-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56D8 24808 bytes
SHA-256: 355f2847592f94453a59ec505f721ccc5f3653f403c93d607d65166091fe5fee
font_01_sfnt_off00009002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9002 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000099b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99B4 19324 bytes
SHA-256: 3242234df0eeb04fd74697105a951b5e5373eb3f503a8a2c3a775ebae622b24d

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