Malicious PDF — malware analysis report

Static analysis result for SHA-256 84a1d391c9428ccd…

MALICIOUS

PDF

35.9 KB Created: 2021-07-03 12:55:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2795a2c5f8d3b293863d76d37a485d00 SHA-1: 3c4e8b96c6a7accc9b561e8f4514ae60faf5e561 SHA-256: 84a1d391c9428ccddcf8a435adc8ca10c216b37b1a1c70cbc75e4cfbd00ff4c3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are part of a link farm designed to attract users searching for game cheats and free accounts. The primary external URL, http://netcdn.tw/app/479516143/free-minecraft-premium-account-game-hack, suggests a lure for potentially unwanted or malicious downloads. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or social engineering attempt to drive traffic to malicious sites.

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/479516143/free-minecraft-premium-account-game-hack
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-secret-cheat-codes-for-music_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/how-to-get-free-robux-insect-no-waiting_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/easy-way-to-hack-roblox-accounts_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/descargar-hack-de-roblox-2021_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-shavaka-roblox-id_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/cheat-codes-roblox-music_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/can-you-buy-roblox-hacks_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/how-to-hack-someone-roblox-account-2021_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/easy-robux-today-hack-no-human-verification_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/free-roblox-accounts-with-robux-and-bc_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/get-free-robux-for-free-no-surveys_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/3-letter-roblox-accounts-free_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/www-roblox-com-robux-free_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-online-robux-generatorhttp-bitiy-2gcisvw_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/game-on-roblox-free-items-on-the-catalog-no-hack_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/free-headphone-roblox-for-your-avatar_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/new-speed-hack-roblox-2021-feb-2_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-colouring-in-roblox_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-how-to-hack-badges_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000035bf.bin
ab098640a30cd289f6e1da173da66bd7ff5070f3fecbdc4f7fe081f0a87f045d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35BF 22872 bytes
font_01_sfnt_off00006909.bin
335ad5bd11d1b5490beeffd4b04e426b92c3c8588cbb26eb3dbcf918d515cd86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6909 18552 bytes

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