Malicious PDF — malware analysis report

Static analysis result for SHA-256 7de23e2ab4707bf6…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 12:25:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 64fcea85760e961ab7eb97d5445a8c8d SHA-1: cc5b3dca3079837d387c83a1fb05d284b141592a SHA-256: 7de23e2ab4707bf6f0a00fcfff879c5256a0b4d5505079a42dc499564a8461e2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, many of which are SEO-optimized slugs pointing to game hacks and cheats for popular games like Coin Master and Roblox. The presence of a "download button" lure and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful websites or initiate downloads. The document's primary purpose appears to be a link farm designed to attract users searching for game exploits.

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/406889139/coin-master-hack-blogspot-game-hack
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-everything-free-on-roblox-2021-april_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-host-a-minecraft-server-for-free_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-level-7-exploiter-crrake_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-no-human-c-verification-or-survey_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-dayz-hack_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-free-roubx_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/rbxcash-free-robux_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-pet-food-free_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-pokemon-go-accounts_GM1094591345.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-hack-spins-game-download_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/safe-hack-for-coin-master-android_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-spins-link-today-hack_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-gift-card-codes-reddit_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/client-minecraft_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id//repository/heroes-online-roblox_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/hack-roblox-tower-battle_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-someone-in-roblox-using-captra_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e51.bin
c6d34bc802329c3b4770ca961e4a81b4a4b7c02e492d3919d635b369f548404c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E51 22332 bytes
font_01_sfnt_off00005fcf.bin
50fd3e550381f5799e1d3d20f329a9b6d44e089a7d6af1b9f448a5a4f1fcf703		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCF 18472 bytes

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