Malicious PDF — malware analysis report

Static analysis result for SHA-256 f77ecea9c91ddaf1…

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 05:09:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cbbba490b96ffdf7239b034cb5c800ee SHA-1: 17a32088168b4d08abd6f7b4a3a77e94832936b0 SHA-256: f77ecea9c91ddaf1adac72b8dea0a55dc43b25245d2f3da14a0c75f55ad3f5e3
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.co/app/431946152/hacks-for-flora-frenzy-roblox-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-mobile-hack-tool-download_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/cheat-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/com-hackear-cuentas-de-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/spin-coin-master-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_off00002de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE8 22432 bytes
SHA-256: db444cc02368bc79bb7e4eb3b8559cba4f2828913e1904b69ae78cfed1c5517c
font_01_sfnt_off00005f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9D 19080 bytes
SHA-256: ed4bc8b1392e0835ada9ea1a6e5f527f6079022a040764fb1cf2dac3dd062ffc

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