Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d27c486e89c1c0…

MALICIOUS

PDF

45.9 KB Created: 2021-06-07 16:29:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 130599dd3c506351cd76878ebdd39675 SHA-1: 214db330c66136cb4f6ef547031e908b413ed9a2 SHA-256: 27d27c486e89c1c052e5c335e0cadab83202d02b3479faf706a1da56115b51f1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for game hacks and free currency, directing users to a suspicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristics indicate a malicious intent to redirect users to potentially harmful content. The ML classifier also flagged this PDF as malicious.

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/free-ninja-legends-groups-roblox-game-hack PDF link annotation
    • http://firesafetyservices.biz/images/free-likes-for-tiktok_GM835599320.pdfIn PDF document text
    • http://firesafetyservices.biz/images/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-insert-scripts-on-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-robux-inspect-element-2021_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://firesafetyservices.biz/images/roblox-lovenet_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • http://firesafetyservices.biz/images/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
stream_004_off0000505e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x505E 27020 bytes
SHA-256: 4d42037aed45a4bc13c91d5e2a17928fbf21f20fccad6d6ff673d310f9aab2f1
font_01_sfnt_off00008df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF8 19264 bytes
SHA-256: 67427b6e375be23c8bfb757c29311c25ccfef205356f0d71d523a38cc43bc9c9

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