Malicious PDF — malware analysis report

Static analysis result for SHA-256 8411a5abda227ea5…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 21:47:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9d4cc2eae79ea776524b0ebb3c2143a8 SHA-1: 05c298735c42435666b547d759aaafae81ec258c SHA-256: 8411a5abda227ea5b97f456504095329caa6c975662ed30f42fb43ab0b04f24f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to a 'free generator / game hack' lure, specifically targeting Roblox and Coin Master. The embedded URL, http://netcdn.tw/app/431946152/free-roblox-followers-generator-game-hack, is presented as the primary destination for this lure. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to trick users into visiting a potentially harmful site.

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/free-roblox-followers-generator-game-hack PDF link annotation
    • http://fkunismuh.org/perpustakaan/repository/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/all-roblox-games-you-can-hack-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/top-free-things-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-hack-fast-org_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-hack-leaderboards-on-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-character-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-free-sign_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/instant-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-roblox-accounts-with-robux-not-used_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-robux-gift-card-print_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-free-hats_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-spins-link-today-twitter_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_off00003068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3068 22076 bytes
SHA-256: 87b82311e12722545f1d71761c1da1b1634c0da3a72bbb7799cea90ff19b08a2
font_01_sfnt_off00006107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6107 18920 bytes
SHA-256: a09d8cf0a559fa74e49e4b45e5aaff27024b971303022577c6bda523e712508e

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