Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c7fc7c0bead8d24…

MALICIOUS

PDF

42.0 KB Created: 2021-05-12 08:32:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4ec9cbbca81fb4569b50f8a33befc554 SHA-1: a00daee22c7a56d25692932a8bc84bedef592a26 SHA-256: 5c7fc7c0bead8d24719be6742b20d1b90d28d2c9b880358f086ae378283d76c2
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/coin-master-free-link-spin-game-hack PDF link annotation
    • http://www.mosaikshop.at/images/roblox-points_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://www.mosaikshop.at/images/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-hack-tool-2021_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
stream_003_off000048ef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48EF 25116 bytes
SHA-256: 9a03e610de861c948e009afa116b33d28cedb886bfc297b507d9303900f62edf
font_01_sfnt_off00008293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8293 18056 bytes
SHA-256: 73446086b7970e4c311ea7edd0e96fe93bb69e7a29ec1c6c70349cef1a9e8050

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