Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bdb5144106c1a0e…

MALICIOUS

PDF

36.6 KB Created: 2021-06-26 09:54:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c98e22196917918a09f3b69f1a4b2906 SHA-1: 9828bc48e13661afbe0f2e631de9d6c7c8844b1a SHA-256: 5bdb5144106c1a0e35abb14223b2da53a9d4a21827c702981994bec5bc2f8cf8
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.co/app/431946152/how-to-hack-peoples-roblox-accounts-2021-game-hack PDF link annotation
    • http://repository.unla.ac.id/repository/download-roblox-robux-hack-v-35_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/hacking-s-roblox-account_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/minecraft_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/hackear-cuentas-de-roblox-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/are-there-any-free-swords-in-roblox_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-minion-shirt-free_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-giftcard-at-robuxcom_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/appkarma-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/master-coin-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/play-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-hack-pack-download_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-howt-to-get-free-hats-on-roblox-high-school_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-redeem-codes_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_off000034a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34A7 22744 bytes
SHA-256: 1e0d3213a037ed5487a2f111f7e3515b05fdce61a82990f220d46ae97e6d8c8e
font_01_sfnt_off000067ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AD 19796 bytes
SHA-256: 0fb8ac7a402483878404e4bc3336e099c36af5eadc85b8ecd36f30d3e9dbcf52

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