Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dcc3541d917bae9…

MALICIOUS

PDF

33.9 KB Created: 2021-07-06 03:00:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-05-30
MD5: d10e2ab6f0ca31e4babaeaa4f45bc087 SHA-1: c9aca7046bf287ad74adbb677240d1905c9d87e5 SHA-256: 1dcc3541d917bae91adc7560e3411226ccc880d5e7f976b978b6b0c3c536aea4
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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.tw/app/431946152/free-robux-generator-game-hack In PDF document text
    • http://digilib-pps.unja.ac.id/repository/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-simulator-100k-free_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/get-free-robuxg_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-roblox-accounts-with-robux-real_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/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
font_00_sfnt_off00002e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E33 22460 bytes
SHA-256: 536f1ee16a628a4adaabe74a10f2f9cd3ef42b3a1a8058e4a87bfc0b65f76d09
font_01_sfnt_off0000601a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601A 18820 bytes
SHA-256: da2f915db23b41a878f83961178ff4e79d82bfec54ff52f4ca014625624765bc