Malicious PDF — malware analysis report

Static analysis result for SHA-256 2145bfc969585e44…

MALICIOUS

PDF

226.5 KB Created: 2021-07-04 11:59:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: af149047e69cc59ff5181356d2dd1f4a SHA-1: aabbafed14bc47c8effcb17f811616ee82c4d53c SHA-256: 2145bfc969585e44a5067c6dda94b98cb64430f1142ad55e34e483ffbc333c67
132 Risk Score

Malware Insights

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

The file presents itself as a lure for a game hack, employing a fake CAPTCHA and a download button to trick the user. The embedded URL points to a suspicious domain, likely hosting a malicious payload. The document's content and heuristics strongly suggest a social engineering attack aimed at tricking users into downloading potentially harmful software.

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-hack-apk-game-hack
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-to-use-cheat-engine-66-on-roblox_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id//repository/boost9-com-roblox-hack_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id//repository/minecraft-hacker-mask_GM479516143.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/get-all-eggs-roblox-hack_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-hacks-for-spins_GM406889139.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/free-robux-admin-command_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/roblox-murder-mystery-2-modded-free-admin_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-to-get-free-faces-promocodes-on-roblox_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/como-hackear-un-usuario-en-roblox_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/free-spins-coin-master-2021-app_GM406889139.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/tiktok-free-coins_GM835599320.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-to-actually-get-free-robux_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/hacks-de-roblox-para-cualquier-los-juegos_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/roblox-mobile-app-free-download_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/haw-to-get-free-stuff-roblox-march-2021_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-hack-cheat-generator-d_GM406889139.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/free-4-now-robux_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id//repository/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00031f03.bin
c5731d03a1d9e42fe01445622234339a0acfd00fe344845d71dfbca8ef4253c8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31F03 25576 bytes
font_01_sfnt_off00035af6.bin
6bc1cc34958d4ed12bb16b42cb2dce72a59e8aa5341386e2968879dd553a11be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35AF6 18532 bytes

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