Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee4eeadd2b37046…

MALICIOUS

PDF

45.7 KB Created: 2021-06-09 13:39:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5289ad5e6f9a151cd7a3b5ce489ffb59 SHA-1: 4caa9282329407e7f10bbc198d7287776b54be40 SHA-256: 6ee4eeadd2b370462c5af1e5803263f39c1ceca321dd0e1fd89c931195b96414
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 0.9864

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/how-to-get-free-robux-no-inspect-may-2021-game-hack PDF link annotation
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-system_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/script-hack-2021-roblox-bubble-gum-simulator_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-hack-game-2021_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
stream_004_off000052a2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52A2 24984 bytes
SHA-256: b0a8d666a6d5654fd38cfa1696a3bfc19e57bf7f4b3cb27a53afa62f8277f312
font_01_sfnt_off00008c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4B 19464 bytes
SHA-256: ed96b2c421ba4e5ff6fc368ebb6520753970a2e655d47b90ce7425f708c1a520

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