Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4281f6c69b50633…

MALICIOUS

PDF

35.4 KB Created: 2021-06-28 07:05:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d079da4d0c904610991e00ba3816aef0 SHA-1: 6d2586d85c7c837fe24f876d35f008890be38424 SHA-256: d4281f6c69b50633b556c014f2039c53acf17938574640d7899629f4b51ead7d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple invisible links and a visual download button lure, directing users to external URLs. The document body and extracted URLs suggest a lure related to game hacks or free items, a common tactic for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Invisible PDF links to CAPTCHA-themed web lure high PDF_CAPTCHA_LINK_LURE
    PDF contains invisible clickable link annotations that point to a CAPTCHA/capcha-themed web path. This is a common phishing and ClickFix-style routing pattern: the PDF itself is inert, while the linked page performs the credential prompt or fake verification.
  • 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.co/app/431946152/free-boombox-backpack-roblox-game-hack
    • https://digilib.stieama.ac.id/repository/roblox-free-exploits-2021_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/mobihack-net-roblox-hack_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/sites-to-get-free-robux_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/minecraft-114-4-download-free_GM479516143.pdf
    • https://digilib.stieama.ac.id/repository/free-daily-spins-coin-master_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/roblox-demonius-free_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/free-robux-no-captcha_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/free-private-minecraft-server_GM479516143.pdf
    • https://digilib.stieama.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/how-to-hack-a-password-on-roblox_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/free-robux-only-username_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/free-robux-no-verification-2021-ios_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/roblox-hack-999999-robux-no-verification_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/free-accessories-roblox_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/hack-ghost-simulator-roblox-september_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/coin-master-online-hack-link_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/daily-free-spins-and-coins-coin-master_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031c6.bin
9530d7ff17ded7236afc0ed88c601129042022f03cada8fcaa757e4cfed2e35f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31C6 22764 bytes
font_01_sfnt_off000064d6.bin
cb396128f672ee2d9c2d6a48f4cdd3a9cff45aa63070b482c4ac68b68f871a07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D6 19256 bytes

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