Malicious PDF — malware analysis report

Static analysis result for SHA-256 03fe497c77a5451b…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 13:54:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f91714ff78e6264749a36b1ceea05d61 SHA-1: 2d85e01b7aa8a1f16b3f7f2c988c2a8f6fef83b4 SHA-256: 03fe497c77a5451b880b0ad657959d97d9681337ed6b77f66a4f32eaa8885a91
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, forming a link farm, that direct users to websites offering game exploits and in-game currency. The primary URL, http://netcdn.tw/app/431946152/roblox-free-exploits-game-hack, is likely a landing page for a malicious download or further redirection. The ML classifier strongly indicated maliciousness, supporting the conclusion that this document is part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/roblox-free-exploits-game-hack
    • https://stmik-kharisma.ac.id/perpustakaan/repository/earn-free-robux-roblox-win_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-free-coins-and-spins-today_GM406889139.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-generator_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-pins-not-used-2021_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-links-for-today_GM406889139.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/fashion-frenzy-roblox-game-for-free_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-roblox-clothes-templates_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-december_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/how-to-get-a-hacked-account-back-on-roblox_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/how-to-get-free-robux-ez-ways_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/aimbot-cheat-roblox_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/roblox-guess-hack_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-spins-hack-2021_GM406889139.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/master-coin-master-free-spin_GM406889139.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-without-verification-or-survey_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/robloxs-got-talent-piano-hacks_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/roblox-cheats-2021_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-hack-apk-latest-version-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003169.bin
0a5cdd894dffe8247b97b16c4222448c4af908d8c3d81b9ea5ba9ae1910f706b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3169 22652 bytes
font_01_sfnt_off000063e8.bin
043331137952d86e457d3600ea8033b41d244ed8296220d2b8f93cd13a79b2aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63E8 19048 bytes

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