Malicious PDF — malware analysis report

Static analysis result for SHA-256 459ff9f22c05196f…

MALICIOUS

PDF

41.5 KB Created: 2021-05-12 00:04:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 141841c880d9ca785431c2736d45e24f SHA-1: 59d11d448bc4923640e20b34082bb110f03dcbd2 SHA-256: 459ff9f22c05196f7b1b8d3570fac73900fa864e5c29fd0d28e622d0b7617954
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/cheat-codes-for-coin-master-game-hack PDF link annotation
    • http://promotion.si/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://promotion.si/images/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://promotion.si/images/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/robux-link_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/getrobux-ninja_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
stream_003_off0000478f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x478F 25172 bytes
SHA-256: 96cd3adb0215873ff4faf376a7b3fe1f002b048bb5ed860b0d24b6fa2e6455e1
font_01_sfnt_off0000808b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x808B 18052 bytes
SHA-256: c83c2968f9adc9e8284b9f918c7c7a0f7d3bbc65ccd05c6284fac2f5c017bb12

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