Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab900641f74eb69…

MALICIOUS

PDF

227.2 KB Created: 2021-07-03 14:32:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8c9d5a9562ef23d45a9251a499227827 SHA-1: 490310fb0b81f45c38a3f5404f03b79b71e2910a SHA-256: fab900641f74eb69fe44d1cdf26dad1b625c10c81bdd21dddd078cafd259a2ed
132 Risk Score

Malware Insights

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

The PDF document contains lures for a fake CAPTCHA and a browser extension installation, aiming to trick the user into downloading a game hack. It embeds a URL pointing to a suspicious domain, likely serving as the download source for the malicious content. The document's content and heuristics strongly suggest a social engineering attack to facilitate malware or unwanted software installation.

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-rare-candy-game-hack
    • http://lib.uho.ac.id/library//repository/bad-minecraft-free_GM479516143.pdf
    • http://lib.uho.ac.id/library//repository/get-free-coins-for-coin-master_GM406889139.pdf
    • http://lib.uho.ac.id/library/repository/coin-master-hack-trick-2021_GM406889139.pdf
    • http://lib.uho.ac.id/library//repository/free-robux-no-human-verification_GM431946152.pdf
    • http://lib.uho.ac.id/library//repository/coin-master-hack-free-spins_GM406889139.pdf
    • http://lib.uho.ac.id/library/repository/minecraft-jar-free_GM479516143.pdf
    • http://lib.uho.ac.id/library//repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdf
    • http://lib.uho.ac.id/library//repository/robux-gainer_GM431946152.pdf
    • http://lib.uho.ac.id/library/repository/free-mods-for-minecraft-pe_GM479516143.pdf
    • http://lib.uho.ac.id/library//repository/free-tiktok-followers_GM835599320.pdf
    • http://lib.uho.ac.id/library/repository/coin-master-hack-tool-without-human-verification_GM406889139.pdf
    • http://lib.uho.ac.id/library/repository/free-minecraft-mods_GM479516143.pdf
    • http://lib.uho.ac.id/library//repository/hacks-to-get-free-robux_GM431946152.pdf
    • http://lib.uho.ac.id/library//repository/free-coins-coin-master-2021_GM406889139.pdf
    • http://lib.uho.ac.id/library/repository/freerobuxhack-us-2021_GM431946152.pdf
    • http://lib.uho.ac.id/library//repository/free-spins-and-coins-coin-master_GM406889139.pdf
    • http://lib.uho.ac.id/library/repository/minecraft-free-android_GM479516143.pdf
    • http://lib.uho.ac.id/library/repository/how-to-hack-bloxburg-roblox-2021_GM431946152.pdf
    • http://lib.uho.ac.id/library//repository/lazyblocks-com-robux_GM431946152.pdf
    • http://lib.uho.ac.id/library//repository/free-minecraft-mods-for-pc_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off0003212f.bin
332af2d4ec262f82b9df9e6719c5f3d0ff2373233f666b7b0094f9a8162d127a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3212F 25576 bytes
font_01_sfnt_off00035d30.bin
33f7aba69edbc262e7f003a9ab6bd60d13afd6bc10333dfa04325793e095c2da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35D30 18712 bytes

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