Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cfb6eb9fbed4d21…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 12:41:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 869324deb7f49f424fc8a2b6a7399e9c SHA-1: 1204fb1049feaf2272dac4edf93836aad620f314 SHA-256: 9cfb6eb9fbed4d21d319436f102b28279e0ed918d93f843a14046423f3fa0de2
82 Risk Score

Malware Insights

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

This PDF document employs a common lure of 'free game hacks' to trick users into clicking a link. The primary link, http://netcdn.tw/app/406889139/coin-master-free-spins-daily-fb-champion-game-hack, redirects to a site hosting further malicious PDF files. While no scripts were extracted, the PDF structure and embedded links strongly suggest an attempt to redirect the user to a malicious site for further exploitation or malware delivery.

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-spins-daily-fb-champion-game-hack PDF link annotation
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-ruby-free_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/generate-robux-for-free-without-downloading-games_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-robux-co_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-lua-hack-scripts_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/tiktok-free-view-followers_GM835599320.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/join-the-group-for-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000331d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x331D 22644 bytes
SHA-256: fb6a543d56edaf413f9e914fa3ea48b06520514659e67b4ddf370da24bd0e7cc
font_01_sfnt_off000065b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B6 19180 bytes
SHA-256: 51e8a71e09394fed5f421e653934fdd3595df511c0ce3b30553a7297a7ed1ba3

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