Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bbfa4d20363ff9a…

MALICIOUS

PDF

34.6 KB Created: 2021-06-29 23:33:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ae851ca12d80f6003d125aa12febee42 SHA-1: 5c4d2849f1f3f1e3579b1aa9d5dc2c123ead3905 SHA-256: 2bbfa4d20363ff9ad52a895fd9cd801b652a7bdacfc490237a22284523d9a12f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs, with a primary lure related to 'free game hacks' for Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a malicious intent to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to lead users to exploit or phishing sites, likely as part of a broader social engineering campaign.

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.co/app/431946152/scooter-roblox-free-game-hack PDF link annotation
    • http://lib.vipklh.ru/repository/play-for-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-ban_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/hack-an-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/cheat-engine-patched-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-clothes-on-roblox-id_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/fly-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-be-a-jailbreak-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/jailbreak-roblox-cheat-may-20-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/get-free-robux-ad_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-robux-2021-july-easy_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/did-roblox-get-hacked-in-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/pokemon-go-free-battle-pass_GM1094591345.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-robux-for-games_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/password-free-roblox-accounts_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_off000031b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B4 22176 bytes
SHA-256: ca79a68ae002e3ed7d3c2d1e7b3b25d9032428dd23938f83bd0e166a52802d24
font_01_sfnt_off00006319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6319 18752 bytes
SHA-256: 78dc1dbbc7e9e6f9832d89af2527ea323d2ea9363d77eda93f8a5400194f0eb6

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