Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f6a2c0b697901a…

MALICIOUS

PDF

43.3 KB Created: 2021-05-11 20:50:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f92b5c1455e93c86020fea256b23e8f0 SHA-1: ffb659ff2b92b741597e0c3770ced78fed46dc57 SHA-256: 98f6a2c0b697901a6382a6acbea7f4d310f4365c9d3f95240c85643ab0e71b09
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 0.9969

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/431946152/robloxfun-com-generator-game-hack PDF link annotation
    • http://www.mosaikshop.at/images/free-robux-exe_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/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/unlimited-spin-coin-master-hack_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/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.mosaikshop.at/images/coin-master-apk-mod_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/roblox-points_GM431946152.pdfIn PDF document text
    • http://www.mosaikshop.at/images/is-roblox-free-on-xbox_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_off00004a27.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A27 26632 bytes
SHA-256: 2d70ebecf1abd0f48c97b49c7b8d2144a69e71cc6b8296039b6c6e140e38669b
font_01_sfnt_off00008626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8626 18516 bytes
SHA-256: c214cdc5875b8c54705917548ad95da7f9ccbf3c1d69b6e52c4f4c9c63cb00fa

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