Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba33d89f38e2e488…

MALICIOUS

PDF

32.6 KB Created: 2021-07-05 19:11:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4e639ea183c3779939cfb1e359e27f95 SHA-1: 8cc420fc1024ffe151d87ebd0884d92e3be2d426 SHA-256: ba33d89f38e2e4883f5910a20f802f1aa09816d79c933a16bbbe53f22a44b7a7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, identified as a link farm, designed to lure users with promises of free in-game currency and items. The primary URL, http://netcdn.tw/app/431946152/get-free-robux-2021-game-hack, and others point to potentially malicious sites. The document's structure and content suggest it is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/get-free-robux-2021-game-hack
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-tiktok-accounts_GM835599320.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/mod-menu-roblox-no-crashing-free_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-red-jacket-roblox-that-is-actually-free_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/roblox-how-to-get-robux-for-free-no-hacks_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/new-roblox-logo-gives-free-robux_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-spins-for-coin-master_GM406889139.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/robux-hack-2021_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-promo-code-generator-roblox-2021_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/roblox-look-girl-free_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-avatar-roblox_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-spins-coins-coin-master_GM406889139.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/download-coin-master-apk-hacked_GM406889139.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-get-free-faces-on-roblox-phone_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/robux-page_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/coin-master-hack-fast_GM406889139.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/khaos-free-robux_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/can-you-hack-robux_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/injector-to-hack-in-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ade.bin
8018bc473ce109109384b940fa15bd029b158564232f1e9d38b0fdd85fe88b2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADE 21512 bytes
font_01_sfnt_off000059d6.bin
821bcaeb5baca65cbb25255ca6205972482cf4d6c0082e9a42268983cc7c06a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59D6 19224 bytes

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