Malicious PDF — malware analysis report

Static analysis result for SHA-256 42b1205debe8f7da…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 14:15:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 274573e18bcb0e9db1808938c9cb5d6a SHA-1: bc50e867472ef35e340098906cc3502898411026 SHA-256: 42b1205debe8f7da3cb172e22d99b528d9de57bd60c324b64cec9a0235894f04
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/431946152/how-to-get-free-roblox-gift-cards-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/asshurt-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-player-launcher-free-download_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-using-hdmi_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/drawings-on-roblox-free-draw-2_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/heroes-online-is-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-codes-in-roblox-arsenal_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-rhythm-track-cheat_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-how-to-use-osiris-cheats_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-lumber-tycoon-2-cheater-box_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-hack-script-admin-weapon_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-gamepass-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-money-hack-restaurant-tycoon_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_off000030a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A4 22100 bytes
SHA-256: 1a0a1e7fd9c46514b5989d4083146cd0c2c1da6103d8916be7f43ec575f7cb4a
font_01_sfnt_off0000618c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618C 19212 bytes
SHA-256: 593eff5b5799541de0a02f4e8f554df8daac443dfed6aeb2634dba9bf3a9d672

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