Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe777e891bb92c5f…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 17:53:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8620b795d003da6c5b21276bc5f04ad0 SHA-1: e657a2573a6e59d1c8a1487e7932a33af91c30ba SHA-256: fe777e891bb92c5ff1934bc19f5eb11270d094c4c08351f580dfe4606543ded5
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/406889139/coin-master-free-coins-and-spins-group-game-hack PDF link annotation
    • http://library.stiks-tarakanita.ac.id/repository/denis-daily-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/silent-assassin-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-no-buying-stuff_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/objet-gratuit-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/descendants-2-games-on-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/what-do-you-do-when-someone-hacks-your-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-hack-download-pc-2021_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/hacker-destroza-la-ciudad-roblox-pokemon-gomiannn_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-online_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-hacking-software_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/survivor-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/glitchtale-battle-of-souls-roblox-hack_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_off000030ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EA 22768 bytes
SHA-256: ff3085f2d61794b3e79e3eaae7a6ee470bca25dbc855e00116b58035ee4d397b
font_01_sfnt_off000063e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E6 18488 bytes
SHA-256: fb59b1f5ad3b1d78d5ae9c71c2b2cb39d8a8a8878e6ccc76b5c7eaa0d92d8094

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