Malicious PDF — malware analysis report

Static analysis result for SHA-256 1518d5f95e10767c…

MALICIOUS

PDF

33.1 KB Created: 2021-07-06 10:15:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: abc62a8f20cab4ca348ff8b017c5c8d7 SHA-1: 9ed4fba92524ba37e097e0ba70689c8ff3f24073 SHA-256: 1518d5f95e10767c1ef89d5cd2741852a9baea7fc00c50e17b6c8dccde861e43
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded URLs, many of which are disguised as download links for games or cheats. A high-confidence heuristic identified invisible PDF links leading to CAPTCHA-themed lures, suggesting a phishing or malware distribution scheme. The document body also contains a URL pointing to 'minecraft-hacks-pc-game-hack', further supporting the lure of free game-related content to entice users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/minecraft-hacks-pc-game-hack
    • http://elibrary.smknesbu.sch.id/repository/roblox-robux-hack-generator_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hacks-for-free-spins_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-gift-card-generator_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/hacker-un-compte-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-cheat-codes-for-snowman-simulator_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-legit-hack-into-somebodies-roblox-account_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-1-click_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-spin-rewards_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-have-robux-for-free-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-no-verify-captcha_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-pc-game-free-download_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/robuxy-com-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-app_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-online-pc_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/kachifpro_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-robux-hack-no-password_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/codes-to-get-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/ho-do-i-hack-in-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-free-online-sign-in_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/cheat-code-for-roblox-ghost-simulator_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e25.bin
bb088400243a5924779dbe905ef82961313e62fd6df4baad82b5528f86203935		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E25 22232 bytes
font_01_sfnt_off00005f24.bin
07b76f9baed0128e51c97dec540ec85ee324852e40b3966ddcd0b7b03af6c7e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F24 18180 bytes

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