Malicious PDF — malware analysis report

Static analysis result for SHA-256 45c3eab12b8b02a1…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 22:31:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 73a60de2ac215790203ddf943c035e71 SHA-1: aaf6a2996933cf844808010925c3be64d17d4b68 SHA-256: 45c3eab12b8b02a14ea99333bbb0c82a41387445ec82f0facba0cadc0d2b1900
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a game hack lure, specifically for Roblox, to redirect users to a malicious URL. The primary heuristic indicates a link to a 'free generator / game hack' redirector, which is a common tactic for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to exploit user interest in game cheats to lead them to a potentially harmful site, likely involving client-side exploitation or further downloads.

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/roblox-rewards-site-game-hack PDF link annotation
    • http://library.futureuniversity.com/repository/rbx-points-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-roblox-places-in-robox-studio2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-mm2-hack-unlimited_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-no-human-verifica_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-pc-game-free-download_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/tiktok-free-hearts-apk_GM835599320.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-roblox-cards-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/play-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-quick-and-easy-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-roblox-app-for-android_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/minecraft-free-ios_GM479516143.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_off000030a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A2 22988 bytes
SHA-256: e42cc959dce655c21f7a88324b805ab71102f2aee00b0641c7da31a5ab878455
font_01_sfnt_off00006495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6495 19048 bytes
SHA-256: 0f35c111a454c0a6e2d470de40e82719d06509419f4c763a0f23663f4f793010

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