Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3477b5fa4dd5a02…

MALICIOUS

PDF

48.4 KB Created: 2021-06-08 11:27:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d0ecfa29ec68ab75910fa7601458dc32 SHA-1: 42ed719b403062308d271b65b4bc9356d92484c3 SHA-256: b3477b5fa4dd5a02a3c7100e66ec71df74b91430a56e6277ff666aa8a523d210
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically targeting Roblox game cheats. The embedded URL, https://netcdn.tw/app/431946152/roblox-super-power-training-simulator-free-vip-server-no-pvp-game-hack, is the primary indicator of this lure. While no scripts were extracted, the document's structure and the nature of the link strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/roblox-super-power-training-simulator-free-vip-server-no-pvp-game-hack PDF link annotation
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-spins-coin-master-march-2021_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-dumb-smart-cheater_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52D8 24432 bytes
SHA-256: 85586c367863cb5b1e5c39c0186afd13fff261c83a76d6e7fe35944a31992631
font_01_sfnt_off00008ae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE1 3120 bytes
SHA-256: 49734f51977507cba6bc8d3ad0cee0363aa119856db094427deb9cf565bb7bca
font_02_sfnt_off000095f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F5 19832 bytes
SHA-256: 2949f0ef9a58a905d91d4749d00e87e3f4e314f0215c87f39030224c4bfa3a8d

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