Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8200537b0a06813…

MALICIOUS

PDF

43.1 KB Created: 2021-06-03 08:27:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e6c8670858985d2c2332d2b0130e5b6f SHA-1: 334834025e20ab8e576afa1a921553476be55631 SHA-256: a8200537b0a068130ee4f739f28ceeb2088acfe1f0d835e397a88baed90c32d4
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 0.9874

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.online/app/406889139/coin-master-free-spins-daily-1-ga-game-hack PDF link annotation
    • http://www.inoxograde.hr/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-free-spins-and-coins-hack_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
font_00_sfnt_off00004f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F71 23772 bytes
SHA-256: 8e28b0e5552d56894a919b6f48c40c95b79411b99d44ad9ee5ee0b2fc4db0879
font_01_sfnt_off00008530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8530 18412 bytes
SHA-256: a4e4e22dbaa1ba591ad8cf5651117adb3a59ec3d16463c49762e7e89c9509709

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