Malicious PDF — malware analysis report

Static analysis result for SHA-256 10965e8f2008d80f…

MALICIOUS

PDF

43.0 KB Created: 2021-06-13 21:44:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: abb8a9cb7240e554a52c66a63e17e833 SHA-1: 5fe854bb4e7fbe1be959a15cc2ce1d19b6e36dfe SHA-256: 10965e8f2008d80f321b699c301567224950cfc76b8bd864bdc74ebfe9ce57e8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, masquerading as game hacks and generators for popular games like Roblox and Coin Master. The primary heuristic indicates a lure for game hacks, and the ML classifier strongly flags the PDF as malicious. The embedded URLs likely lead to further malicious content or phishing pages, suggesting a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.co/app/431946152/really-scary-roblox-games-to-pla-free-game-hack PDF link annotation
    • http://bit-sky.com/images/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/give-free-robux_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/how-to-use-cheat-engine-62-on-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/how-to-get-hacks-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/roblox-wanted-money-hack_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/why-is-tiktok-free_GM835599320.pdfIn PDF document text
    • http://bit-sky.com/images/roblox-free-dominus-promo-code-2021_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-hack-no-verification-2021_GM406889139.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_003_off00004a54.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A54 25272 bytes
SHA-256: 5d43e0dc9c7171b9ec81ba7ec57acf33d1995e54e3d8a571b443f74f62421575
font_01_sfnt_off0000845b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x845B 18768 bytes
SHA-256: 732d18e853b716f459b3d19994cf485facaf26d9bf844b1d4b2885c95cf21279

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