Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4801403fa91bef8…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 10:01:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 47c99cad5f0f107ead1704ae91fd7dd6 SHA-1: 555eac595b87160d2e2b61d5d235b62a978e5f91 SHA-256: e4801403fa91bef88e2c4a599a6717a1665bead9881d5bc12a3118daa9ff698e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to websites offering game hacks and generators, a common lure for malicious content. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the embedded URLs and the nature of the lures strongly suggest an attempt to trick users into downloading malware or visiting a malicious 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/406889139/coin-master-ultra-attack-hack-game-hack PDF link annotation
    • http://elibrary.perludem.org/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/no-download-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/list-of-roblox-hackers_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-script-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/ninja-legend-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-promo-codes-for-roblox-2021-not-expired-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-money-in-roblox-high-school-cheat-engine_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/gamefreaksz-co-free-robux_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_off00003274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3274 22964 bytes
SHA-256: 298aad73807d4d6f7f74b0a6c0a68e9e28f01f76e2ac6c078d0e83605ad88196
font_01_sfnt_off000065fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65FD 18264 bytes
SHA-256: f943036127e3db10ee7ebc9a2042fc32afae08fea931800890a55cc6ab9fb5c5

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