Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea53100d6fc4b54f…

MALICIOUS

PDF

37.9 KB Created: 2021-07-05 09:17:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: be9d94b7d0a36093aef41fcaf64e044d SHA-1: 80229eece06acfc652c9908a77274effe7d4e8fb SHA-256: ea53100d6fc4b54fd03cfe3c822fcf625243a9cb9e610db41e4ce7d73bc10135
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded URLs that lure users with promises of game hacks and free currency. The primary URL, http://netcdn.tw/app/406889139/how-to-get-free-spins-in-coin-master-2021-game-hack, is a strong indicator of a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a malicious workflow designed to redirect users to potentially harmful sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/how-to-get-free-spins-in-coin-master-2021-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-bc-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-speed-hack-download-free-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-free-accounts-with-robux-that-work_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-by-wtaching-ads_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/dashing-simulator-roblox-hack-tutorial_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/grab-points-login_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-codes-2021-real_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_off0000324f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324F 22936 bytes
SHA-256: 1e686645dc60929d26ba20b7ea989236bbfaa31d3710846b9284d9202bd905e8
font_01_sfnt_off000065e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E6 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00006fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCB 18740 bytes
SHA-256: 821de93f8b3417c0f233c24cc26099972f2fb00f78fdfa3c6795f0d6fdf59cc4

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