Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fd7de5f07a4268f…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 21:45:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e78d1f6bd5003e895040224ca1c04d4e SHA-1: 62254c63d2d47240aa9076fa7c4a7f375ab85f8c SHA-256: 9fd7de5f07a4268fea78ee0f697ba8a16dd54718374d8337ec81fd24d60c27a9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs and a document body that promotes game hacks and cheats, specifically for Roblox. The heuristic findings indicate a link farm and a high probability of maliciousness, suggesting the document is designed to trick users into downloading malware. The primary IOC is the URL http://netcdn.tw/app/431946152/grabpoints-robux-game-hack, which is likely the distribution point for the malicious payload.

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/grabpoints-robux-game-hack
    • https://pustaka.widyakartika.ac.id/repository/the-roblox-free-bloxburg_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-on-dragon-ball-z-rage-roblox_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/paginas-hack-para-conseguir-robux_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/free-charactes-in-roblox_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/how-do-you-get-thengs-in-roblox-for-free_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/free-roblox-invitations-loadstrings-full-lua-free_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/roblox-cheat-engine-download-for-mac_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-50-robux-free-2021_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/generador-de-robux-hack_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spin-game_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/roblox-script-hacks_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/reddit-coin-master-free-spins_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/roblox-hack-site_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-items-in-roblox-games_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/2021-how-to-get-free-robux_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/speed-script-roblox-hack_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/roblox-pokemon-adventures-hack_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/pubg-uc-buy-in-pakistan_GM1330123889.pdf
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-coins-links-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_off00002d53.bin
fba9b2e64cf2f5e6c262cdb5c304a239d08f4389cfceb3eb1eb990587d054574		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D53 22088 bytes
font_01_sfnt_off00005e76.bin
3646c9e8f9274f81ffafdae012ef6d50837bbfb2ee4a4e5094e57fa7d940b82a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E76 18952 bytes

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