Malicious PDF — malware analysis report

Static analysis result for SHA-256 9265874bb11e4d9e…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 22:11:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e5ed18b164d916d7db70e196acee6f61 SHA-1: 9a58cb73c465400237b0ed8df7fb9d1a52a0bad9 SHA-256: 9265874bb11e4d9e12505d154ca49b43c1aa26d0e7a97d5c834dd55216ea627f
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/479516143/minecraft-apk-114-4-game-hack PDF link annotation
    • http://cintabaca.org/katalog/repository/how-to-get-lots-of-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-earn-free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/discord-free-t-shirts-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-hack-admin-on-roblox-games_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-dex-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-reversed-reality-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-anti-cheat-bypass_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-tokyo-ghoul-online-cheat_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/how-to-get-robux-easy_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_off00003151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3151 22256 bytes
SHA-256: 59cf57cb898ecf606607413de75df3bfddc5dcdc448dfd3d67d68a50206b5c57
font_01_sfnt_off000062c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C4 18372 bytes
SHA-256: cfa1744e15de76beef4250e2e8e5213b12ebb5623f2a1aca1772815b9c3f87cb

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