Malicious PDF — malware analysis report

Static analysis result for SHA-256 2510bbf90de2c93b…

MALICIOUS

PDF

34.6 KB Created: 2021-07-02 05:56:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ce0452cde00c8a647114ee57861d961e SHA-1: ac685297c6cb05d4b72b80c546d4a70463528b84 SHA-256: 2510bbf90de2c93b532652052264c6c07f249ff031b41b66a4abc04a78f1432b
102 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which are presented as 'hacks' or 'cheats' for games like Roblox and Coin Master, indicating a lure for users to download potentially malicious content. The PDF_SEO_LINK_FARM heuristic firing suggests a large number of these links were generated programmatically to appear as legitimate content. The ML_NYX_PDF_MALICIOUS model also strongly flagged this file.

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.co/app/431946152/base-wars-roblox-hack-game-hack PDF link annotation
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-exploit-for-roblox-that-works-on-fed-games_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/kick-persons-in-free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/tiktok-free-book_GM835599320.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-robux-redeem-cards_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/roblox-room-cheat-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/robux-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/roblox-games-that-actually-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3106 22344 bytes
SHA-256: f4df5a43b709b6ad12e2f33ac96f3357f277a720d317a69f91a1e780db357cce
font_01_sfnt_off000062a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A3 18852 bytes
SHA-256: 846a6f3f3a2284b3d451ae0d56a265a39ee0086eb871e969ad408312685bc4d4

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