Malicious PDF — malware analysis report

Static analysis result for SHA-256 340a11e6e7dd7749…

MALICIOUS

PDF

35.7 KB Created: 2021-07-04 11:18:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c1fd6a24021531c3bb9d8333398c2b26 SHA-1: 80984c426cc928b31114d192115c271461426c12 SHA-256: 340a11e6e7dd774930d5e4c7cbe38cb586dbcde7300d41be20c82f8a2511b1c3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link and text related to 'Coin Master Free Spins Hack', directly linking to a URL known for hosting game hacks. This lure is designed to trick users into downloading potentially malicious content or visiting further compromised sites. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is a phishing or malware distribution lure.

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-free-spins-hack-but-no-surveys-game-hack PDF link annotation
    • https://www.simplenepaltravel.com/userfiles/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/pubg-uc-free_GM1330123889.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/ex7-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/how-to-buy-clothes-in-roblox-xbox-1-free_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/client-minecraft_GM479516143.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/dayz-og-roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/play-games-for-robux_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/microsoft-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
stream_002_off000032c7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32C7 23052 bytes
SHA-256: bdbb89be5743c61632f4972ba4413fa0828e644bcf0dbd36cdc4c6ebd544278a
font_01_sfnt_off000066b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B9 18992 bytes
SHA-256: 97804845bf467d2aeff7c85d47b4467823aac43885222e40ee61a94876ec16b2

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