Malicious PDF — malware analysis report

Static analysis result for SHA-256 d65a14920915d310…

MALICIOUS

PDF

226.4 KB Created: 2021-07-06 21:01:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8a3d80584a9f514cb268db8e77f41a8e SHA-1: acf5215a56675358412dcc586763a3d41d944ae0 SHA-256: d65a14920915d310e2508d7a3bb0f43bb961d19b489c9f44dcdfbeffd17a62d1
132 Risk Score

Malware Insights

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

The PDF document employs social engineering by presenting a fake CAPTCHA and a browser update lure to trick the user into clicking a malicious link. The embedded URL, http://netcdn.tw/app/1094591345/pokemon-go-free-lures-game-hack, likely leads to a malicious download or exploit. The document's content and heuristics strongly suggest an attempt to facilitate malware installation or credential theft through user interaction.

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-lures-game-hack
    • http://e-library.smkn1jombang.sch.id/repository/blox-fun-info_GM431946152.pdf
    • http://e-library.smkn1jombang.sch.id/repository/free-spins-coin-master-links_GM406889139.pdf
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdf
    • http://e-library.smkn1jombang.sch.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-spin-cheat_GM406889139.pdf
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-free-edition_GM479516143.pdf
    • http://e-library.smkn1jombang.sch.id/repository/how-to-add-mods-to-minecraft-pe_GM479516143.pdf
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-unlimited-spins-apk-free-download_GM406889139.pdf
    • http://e-library.smkn1jombang.sch.id/repository/free-spins-coin-master_GM406889139.pdf
    • http://e-library.smkn1jombang.sch.id/repository/free-face-in-roblox_GM431946152.pdf
    • http://e-library.smkn1jombang.sch.id/repository/roblox-hackers-list_GM431946152.pdf
    • http://e-library.smkn1jombang.sch.id/repository/roblox-drive-shaft-money-hack_GM431946152.pdf
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-sign-up-free_GM479516143.pdf
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-bedrock-free_GM479516143.pdf
    • http://e-library.smkn1jombang.sch.id/repository/roblox-script-hacks_GM431946152.pdf
    • http://e-library.smkn1jombang.sch.id/repository/2021-coin-master-hack-without-verification_GM406889139.pdf
    • http://e-library.smkn1jombang.sch.id/repository/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdf
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-cards-link-2021_GM406889139.pdf
    • http://e-library.smkn1jombang.sch.id/repository/roblox-account-free-robux_GM431946152.pdf
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-game-hacks_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00031eca.bin
99ac475e41166148e0f00dae78aabb6feca5a5c0825440989e831013ef3ebc3d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31ECA 25576 bytes
font_01_sfnt_off00035aca.bin
fd3e47bfbe46ff84121da50e0276c4d91218026c87ad7491345faaded76bce14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35ACA 18496 bytes

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