Malicious PDF — malware analysis report

Static analysis result for SHA-256 789f48cc9f604339…

MALICIOUS

PDF

33.9 KB Created: 2021-06-25 14:46:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 944b6455778b31ea5c9d13a01a8522f9 SHA-1: 4b6d066972cf64cbd31cea17de97ba119815f31f SHA-256: 789f48cc9f6043394e4cc705f9a588078ca1be53e6913955213419b42a241ac2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it links to a 'free generator / game hack' redirector, specifically http://netcdn.co/app/431946152/roblox-free-plane-game-hack. The document body also contains this URL and mentions 'Roblox Free Plane', reinforcing the lure. The ML classifier strongly flagged this PDF as malicious, suggesting it is designed to trick users into visiting malicious 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-free-plane-game-hack PDF link annotation
    • http://www.fkunismuh.org/perpustakaan/repository/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-roblox-scp-game-download_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-free-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/pokemon-go-free-6th-gen_GM1094591345.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-do-you-get-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-speed-change-cheat-engine_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-girl_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/mcpe-116_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_off00002ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECE 22300 bytes
SHA-256: 1ed3dd3e261cda4ab94787bdc7ebf6531a0710ff4a3abff0e85884bca834e66c
font_01_sfnt_off00006036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6036 18804 bytes
SHA-256: 8f8dc508866b0661656a6b2ca5e187b3b10234d1b0caa9cf3eed6bd681b2b05a

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