Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d39d16758dab34…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 09:24:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 39179734eaa277553cd7d262c38f5075 SHA-1: e737d14387c7397cf7bd6cb69279ec11e5092e80 SHA-256: 80d39d16758dab34f0b6a422a6472b02a53b4f7e279370c6036af4a63231aa1c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document uses a game hack lure to entice users to click on an embedded URL. The primary URL, http://netcdn.tw/app/406889139/coins-master-hack-game-hack, is flagged as a high-risk redirector. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to lead the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/coins-master-hack-game-hack PDF link annotation
    • http://perpusfkip.upstegal.ac.id/repository/instant-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-download-roblox-ccv3-hack_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-vip-server-roblox-battle_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-for-sale_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/cheating-on-your-roblox-girlfriend_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/super-hero-adventures-online-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/followers-bot-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/is-tiktok-free-to-install_GM835599320.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-download-roblox-apoc-hacks_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-fly-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-just-today_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/auto-clicker-download-roblox-free_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_off000030ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EA 22564 bytes
SHA-256: e7c72ed9edcf6b4d2063c42590d30d04de9bbf51d16e2f0247da979c01166cea
font_01_sfnt_off00006331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6331 18004 bytes
SHA-256: 0f5586fad8963a3d66dcc08ea216a344d94ecc2f9eb49a7a48818ccd749a571f

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