Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc5bf098a80bcf86…

MALICIOUS

PDF

228.1 KB Created: 2021-07-05 23:38:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fa703691398d1665c7c904b3a21f8aa7 SHA-1: 4069ef8f9812fa7b57a6fca955f9360ffb11f1c0 SHA-256: cc5bf098a80bcf86c7e4e47a93a3889fb7c6ed36a7e395bf58785bab82268d66
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains heuristics indicating it presents a fake CAPTCHA and a download lure, aiming to trick users into installing a browser extension or update. The document body, though heavily obfuscated, contains references to 'Pokemon Go Free Shiny Eevee' and a URL that likely serves as a payload delivery mechanism. The presence of these lures suggests a social engineering attack designed to compromise the user's system.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

Heuristics 6

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/1094591345/pokemon-go-free-shiny-eevee-game-hack
    • http://perpustakaan.idia.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdf
    • http://perpustakaan.idia.ac.id/repository/roblox-hack-game_GM431946152.pdf
    • http://perpustakaan.idia.ac.id/repository/roblox-rewards-robux_GM431946152.pdf
    • http://perpustakaan.idia.ac.id/repository/how-to-earn-robux-by-playing-games_GM431946152.pdf
    • http://perpustakaan.idia.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdf
    • http://perpustakaan.idia.ac.id/repository/free-spin-link-for-coin-master_GM406889139.pdf
    • http://perpustakaan.idia.ac.id/repository/free-robux-co_GM431946152.pdf
    • http://perpustakaan.idia.ac.id/repository/get-free-robux-com_GM431946152.pdf
    • http://perpustakaan.idia.ac.id/repository/how-to-cheat-script-roblox_GM431946152.pdf
    • http://perpustakaan.idia.ac.id/repository/how-do-you-get-free-food-in-coin-master_GM406889139.pdf
    • http://perpustakaan.idia.ac.id/repository/coin-master-daily-free-rewards_GM406889139.pdf
    • http://perpustakaan.idia.ac.id/repository/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdf
    • http://perpustakaan.idia.ac.id/repository/roblox-rewards_GM431946152.pdf
    • http://perpustakaan.idia.ac.id/repository/game-dev-tycoon-2-roblox-hack_GM431946152.pdf
    • http://perpustakaan.idia.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdf
    • http://perpustakaan.idia.ac.id/repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdf
    • http://perpustakaan.idia.ac.id/repository/coin-master-spin-hack-no-verification_GM406889139.pdf
    • http://perpustakaan.idia.ac.id/repository/coin-master-twitter_GM406889139.pdf
    • http://perpustakaan.idia.ac.id/repository/how-to-gift-robux-on-mobile_GM431946152.pdf
    • http://perpustakaan.idia.ac.id/repository/how-to-get-free-robux-without-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off0003242c.bin
c4057f399859d9b4b4b729c48de586a61b74b70f4c69866631d0958579beecf4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3242C 25576 bytes
font_01_sfnt_off0003602d.bin
4a8ea621b6116cbe2139f4df54b38cffc315ef6e572a7c50d47c7a36dc26fa6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3602D 18940 bytes

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