Malicious PDF — malware analysis report

Static analysis result for SHA-256 2678f38fbe2ada14…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 23:40:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 05db1604eacc6776fe17c680ec6cacd1 SHA-1: 10c900e5381d353b8b810ee0a3aea1ca0658d449 SHA-256: 2678f38fbe2ada143b4709e3939eca15fc220f0b9fe4e4404f409457d1ff9faa
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document uses a lure related to free game hacks, specifically mentioning Minecraft, to entice users. It contains a high-risk heuristic firing for a game hack redirect, pointing to the URL http://netcdn.tw/app/479516143/minecraft-free-no-virus-game-hack. This URL is likely the primary distribution point for a malicious payload or phishing page. The ML classifier also strongly indicates maliciousness.

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/479516143/minecraft-free-no-virus-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/free-coin-codes-for-roblox-bubble-gum-simulator_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-do-the-sex-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/lucky-patcher-roblox-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-hack-may-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/enter-the-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-add-ons_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/programa-para-hackear-usuuarios-de-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/can-i-have-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-hack-my-dudes_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/fearless-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-cheat-in-roblox-pet-simulator_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_off00002fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCD 22564 bytes
SHA-256: 2d19df47d21b102d477fe570b357a1b2e009a18832c560e1c10cb8fdb4ef2ebc
font_01_sfnt_off0000620b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620B 18272 bytes
SHA-256: bf996c983106b115fd3bd2435b69e5e984477bc90884b46e6e1560a3bcd683fa

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