Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa999898c39b976…

MALICIOUS

PDF

35.7 KB Created: 2021-07-03 21:46:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c73c0652fdbc4a2ce115cf26d82a37bd SHA-1: 09a511b33aee6a05133168deacc13b74ef62588e SHA-256: baa999898c39b976e9b235ed442b30427648f9f8473492fd8ea01738b44e479c
82 Risk Score

Malware Insights

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

The document presents itself as a lure for 'How To Hack Roblox Accounts', incorporating a fake CAPTCHA to trick users into clicking a malicious link. The embedded URL and numerous other URLs point to sites offering game hacks and cheats, reinforcing the social engineering aspect. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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
  • 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/431946152/how-to-hack-roblox-accounts-2021-game-hack
    • https://www.e-library.smpn09.semarangkota.go.id/repository/claim-free-robux-button-no-human-verification_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-minecraft-server-hosting_GM479516143.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/adopt-me-roblox-hack-place_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/como-conseguir-ropa-gratis-en-roblox-2021-hack_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-have-a-coo-roblox-avatar-for-free_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/robux-generator-download-from-http-wehackcom-robloxgeneratorfree_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/v3rmillion-roblox-speed-hack_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-robux-easily-low-age-rating_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-get-any-face-for-free-on-roblox_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/ccv5-roblox-hacks_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-robux-generator-fake_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-apk-hack-unlimited-robux-ultima-version_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-gamepasse-roblox_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-do-u-get-free-robux_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-egg-roblox-eggcellent_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/cheat-codes-for-bubble-gum-roblox_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/best-hacks-for-counter-blox-roblox-offensive_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-spins-for-coin-master_GM406889139.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-hack-for-free-robux-no-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003437.bin
d06ac5a0ae3e245bf72d56a89381f9f2c86228cfcf1291e2b03e846857b2bc72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3437 21916 bytes
font_01_sfnt_off000064e5.bin
c059e5ce0b13cf3e98c6bfdb87126f354e1dae45520eeb333857e6d2b791b0b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E5 19468 bytes

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