Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b2ace28fe5463da…

MALICIOUS

PDF

36.0 KB Created: 2021-06-18 05:18:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9b7bd76c385b42153a596c634b086d0c SHA-1: 65777defd710592a22357ad2d38ccfc4f3f56e2b SHA-256: 4b2ace28fe5463dadc26358d89de65392baaf08cc6fd64d957587ff65149d088
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are disguised as game hacks or generators for popular games like Roblox and Coin Master. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a social engineering tactic to trick users into visiting potentially malicious sites. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classification suggest a malicious intent to redirect users to phishing or malware distribution sites.

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/roblox-speed-hack-2021-october-game-hack PDF link annotation
    • http://tasleemdubai.com/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-robux-app_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/i-need-robux_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/roblox-weird_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-tiktok-likes-75_GM835599320.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/spinuri-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-do-you-download-minecraft-for-free_GM479516143.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_off0000325a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x325A 23248 bytes
SHA-256: ec45cadbeb66ec80465824446f6c1666ec5daedd585be6a8c519c8fe439d5af5
font_01_sfnt_off00006642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6642 19512 bytes
SHA-256: 095dfeeb5fbe6e603fd91a0e73f19c6cbe789195195c9aa64b1f3a4a78b81891

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