Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdf229273ba2cbac…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 21:32:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 458c787bda1c7ba1c13bfc43fd14f58d SHA-1: db1ba6c4081a2ca17d9854e442e012295eab4e5a SHA-256: cdf229273ba2cbac26634d688a69ba31af5717fe39cb27d7dfedae7daf8a02cb
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 0.9980

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/free-spins-coin-master-game-hack PDF link annotation
    • http://stitqi.ac.id/website//repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/how-to-get-free-robux-on-apple-phone_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/i-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/robux-2021_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/robux-hack-v6-5-mythical-chaos-pastebin_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/hacked-warning-roblox-id_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
font_00_sfnt_off0000328a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328A 22476 bytes
SHA-256: be9f27dc0357e2139f7c788748502a869454a06fd011fa24c704af9e7c4539c6
font_01_sfnt_off000064c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C4 18176 bytes
SHA-256: e8ec895f495d139acdb298d515a7ca0fffd25b58e102aa71b0a100d8abb1bbce

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