Malicious PDF — malware analysis report

Static analysis result for SHA-256 649bd48ffb8993ae…

MALICIOUS

PDF

33.1 KB Created: 2021-07-05 16:28:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9b58c5b537cc141ee81098c330c8b8a3 SHA-1: 061e34237d0d692029608e1738a1b54ebf06d1d4 SHA-256: 649bd48ffb8993ae6a9bb5bba99e65e5d849b0d0bfb93da8265e0d200a92b541
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and items to entice users into clicking embedded links. The primary link, http://netcdn.tw/app/431946152/roblox-top-game-hack, redirects to a site likely hosting malicious content or further phishing attempts. While no scripts were explicitly extracted, the PDF structure and heuristics indicate a malicious intent to redirect users to potentially harmful external resources.

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/431946152/roblox-top-game-hack PDF link annotation
    • http://library.umla.ac.id/repository/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-do-you-get-free-robux-on-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/pokemon-go-free-bonus-box_GM1094591345.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/robux-all-codes-free-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-for-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_off00002d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6F 21760 bytes
SHA-256: 62dbda16bb20e68b932c52637c9fb692d190c23eb578e770359b15147be14c43
font_01_sfnt_off00005d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D58 18664 bytes
SHA-256: 028abfa79713013eb59317e371661b23d220663c7b341c282357ca2b06f49a86

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