Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5df30770c4124f9…

MALICIOUS

PDF

35.0 KB Created: 2021-06-20 07:16:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-27
MD5: 033d7d2a143a5e139a9afd94d509add2 SHA-1: 33e4f5bc80476b747d8b4464641aaf1e464fab83 SHA-256: c5df30770c4124f906a6c456de91ca211e30b19ec676c0ddc3236b5ac98391fb
260 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/como-atravesar-paredes-en-roblox-hack-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-make-your-own-robux-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-my-boyfriend-cheated-on-me_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-generator-no-servey_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/greenville-roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-earn_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_002_off00002f35.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F35 22896 bytes
SHA-256: daffd40c88d9c73cf7e78e3072765af645d2c39cf7c376b4b147d47e98d17323
font_01_sfnt_off00006277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6277 19460 bytes
SHA-256: 2c49aa52e284869459afeb663dc8e06ffff3230fab7a1b8648e40488c24181af

Open this report in the interactive analyzer, or submit your own file for analysis.