Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e7177e5d7a8f84d…

MALICIOUS

PDF

36.1 KB Created: 2021-07-05 02:20:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 68f6b22a0f52880860a23737c30661c4 SHA-1: a29bcc3b5c192ac89da80feae7ff31ed8696e005 SHA-256: 4e7177e5d7a8f84d5d84a083d0f40ac6a17d130dbc7d06197c00292a61b008e3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that lead to known malicious redirectors, specifically advertising game hacks and free currency generators. The primary malicious URL identified is http://netcdn.tw/app/479516143/how-to-download-minecraft-for-free-ios-game-hack. The document body and heuristics indicate a lure to download potentially unwanted or malicious content.

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/479516143/how-to-download-minecraft-for-free-ios-game-hack In PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-for-kids-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-robux-free-and-easy_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-for-mobile-24-com-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-roblox-hait_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/use-cheat-engine-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/apps-that-can-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/will-you-get-hacked-buy-buying-robux-online_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/what-to-do-when-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-lumber-tycoon-2-map-xbox-one-cheats_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_off000036a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36A0 22992 bytes
SHA-256: 7ff975ef1ae17d6223c19df5d53c1984f34b2e13ab3785ac198872f809f3c188
font_01_sfnt_off000069c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C1 18576 bytes
SHA-256: 3e1136ec464d3bc1fda9ba7dd324a7175972f48092c1816aca3366f53a9db50b