Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b730dc57c2e88fa…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 22:23:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 67f87bb366d28a091711f35287f1e489 SHA-1: 6802566fe5089b02507f0596d07b4bd2c67dde8f SHA-256: 5b730dc57c2e88fafa31b46c53ec77cf148c060d5e4185e9ff69991949e1548d
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA or human verification prompt, a common lure to trick users into downloading further malicious content. The embedded URL points to a site offering game hacks, further supporting the malicious intent. The ML classifier also strongly flagged this PDF as malicious.

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/479516143/classic-minecraft-net-hacks-game-hack
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/coin-master-hack-root_GM406889139.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-minecraft-coloring-pages_GM479516143.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/promo-codes-for-free-robux_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/how-to-get-free-roebucks-without-verification_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/roblox-catalog-hack-script-pastebin_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-money-codes-on-adopt-me-roblox_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/pubg-600-uc-price-in-pakistan_GM1330123889.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-minecraft-account-reddit_GM479516143.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-minecraft-bedrock-server-hosting_GM479516143.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/coin-master-hack-online-no-human-verification_GM406889139.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/hacking-apps-roblox_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-spins-coin-master_GM406889139.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-roblox-codes_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/minecraft-xbox-free_GM479516143.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/cheat-engine-roblox-restaurant_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-robux-2-steps_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-spin-coin-master-app-download_GM406889139.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/how-to-make-clothes-for-free-on-roblox_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/minecraft-free-demo_GM479516143.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-roblox-accounts-no-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000327b.bin
c1f0d8fc535aced59e58179c182af105e0e0b42e97ed9ab5f7d64b962a052c5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x327B 22480 bytes
font_01_sfnt_off00006491.bin
e5e43c4f2a76601b68ea8201b0c37883eedd9e77f9c7f84ae37ad33981ff38f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6491 18100 bytes

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