Malicious PDF — malware analysis report

Static analysis result for SHA-256 478b54caccbad10d…

MALICIOUS

PDF

34.9 KB Created: 2021-07-01 10:11:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 7fc9e1c6a6f013e334d55eaec820b456 SHA-1: 752654312e83f2aca4b843b649f1a76a76853ae3 SHA-256: 478b54caccbad10deb242122d51310abd2bb34626be956ef67baa7cd47673508
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.co/app/431946152/lumber-tycoon-2-cheats-roblox-game-hack In PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-wall-hack-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/pokemon-go-free-644_GM1094591345.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/tiktok-free-gift_GM835599320.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/robux-hacks-on-computer_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/alone-roblox-how-to-get-free-cash_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/bux-gg-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/50-robux-free_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/tiktok-free-auto-views_GM835599320.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-no-waiting-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/tiny-tanks-cheats-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_off0000300a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300A 22480 bytes
SHA-256: ee4af255a186d264b0ee08fc9f9acfef56a3b2132f70a90686e51d73555fa91e
font_01_sfnt_off00006228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6228 19460 bytes
SHA-256: 5b374ae2b78d501ae11c9125619f5e02872067757c05301bd9eca131fd9af9e9