Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e0403590e6b3ac0…

MALICIOUS

PDF

33.7 KB Created: 2021-07-19 14:04:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 51f3c262f3c1e3f31b686e5bf29044e0 SHA-1: 820239c19bf1e690e38bf4a1a9f4a907544e7e2e SHA-256: 4e0403590e6b3ac0ce3f887b4d6fb18ba623048b02b43e43184377cf4ec17188
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'Coin Master Hack' and links to external URLs that are likely malicious. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' indicates the document's intent to redirect users to a game hack generator, which is a common social engineering tactic. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to lead the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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/coin-master-hack-without-verification-game-hack PDF link annotation
    • http://hakuna.co.za/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://hakuna.co.za/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://hakuna.co.za/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://hakuna.co.za/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://hakuna.co.za/images/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://hakuna.co.za/images/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://hakuna.co.za/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://hakuna.co.za/images/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://hakuna.co.za/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://hakuna.co.za/images/coin-master-free-spins-link-today-instagram_GM406889139.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_off00002c31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C31 23628 bytes
SHA-256: b180f3022bd53fb795825841ac74372974745d905b11f2d02a878565ea63aec6
font_01_sfnt_off0000619f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619F 18356 bytes
SHA-256: dc73d1475286564dbbcfd7fe1f785306788ee44bec01666c46f1ad38f7aa2791

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