Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c5e6fc93a226fa4…

MALICIOUS

PDF

226.7 KB Created: 2021-07-06 03:13:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0d95b0ca6bd6943934151ec06b4f41e4 SHA-1: eefe57867391187be0026cd58f4791d794b9ce7f SHA-256: 8c5e6fc93a226fa46d537cf503feb5001898e2a00a635637d48e158bd4643b87
132 Risk Score

Malware Insights

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

The file is a PDF that displays a fake CAPTCHA and a browser extension installation lure to trick the user into downloading a payload. The embedded URL points to a suspicious domain associated with game hacks, further indicating a malicious intent to deliver malware or facilitate scams. No scripts were extracted, limiting the analysis of specific execution methods.

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-gift-box-game-hack
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/roblox-kick-ban-hack_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/coin-master-working-hack_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/how-to-get-a-free-pumpkin-kid-roblox_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/roblox-bad-business-hack_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/roblox-admin-hack-apk_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/freerobux-co_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/how-to-modify-roblox-leaderboard-stats-in-cheat-engine_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/hack-cuentas-gratis-en-roblox-pastebin_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/coin-master-hack-activegamer_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/hack-noclip-roblox-2021_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/free-spin-coin-master-ios_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/how-to-get-a-free-minecraft-server_GM479516143.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/robux-hack-site_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/game-toolbox_GM479516143.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/roblox-prison-royale-hack_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/best-free-script-executor-roblox-2021-march_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/aternos-free-minecraft-server_GM479516143.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/coins-master-hacks_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00031e16.bin
ee70297295dba2ac0f1986ea7a42eb4c4422f28668a6508a84017bc8c5ef3f0e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31E16 25576 bytes
font_01_sfnt_off00035a18.bin
d4a747d6ffb1a18c3bd0ccf9c05a77296d7cce872444f05eb63760ad5083a95c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35A18 19008 bytes

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