Malicious PDF — malware analysis report

Static analysis result for SHA-256 023032bd1e881608…

MALICIOUS

PDF

36.5 KB Created: 2021-07-06 15:40:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b732c6980c784e1b3239423dbd10e9db SHA-1: d3dc35f3e99bf5df4fb13853acaa96f6addd740a SHA-256: 023032bd1e88160862683a3832eba0fc4867caa48b388572d258707de8b79c42
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on suspicious domains and offer 'hacks' or 'free currency' for games. The heuristic PDF_SEO_LINK_FARM indicates a large number of such links, suggesting a link farm designed to attract users searching for cheats. The ML_NYX_PDF_MALICIOUS score further supports the malicious nature of this document, likely serving as a lure to download further malware or engage in phishing.

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/www-mistplay-com-how-to-get-free-robux-game-hack
    • https://perpustakaan.man2kotaserang.sch.id/repository/free-roblox-group-payouts_GM431946152.pdf
    • https://perpustakaan.man2kotaserang.sch.id/repository/roblox-kohls-admin-house-hack-script_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/roblox-admin-house-hack-kohls-admin-house_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/the-society-of-magic-roblox-hack_GM431946152.pdf
    • https://perpustakaan.man2kotaserang.sch.id/repository/free-gfx-roblox-maker_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/free-instant-catalog-item-roblox-2021_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/robux-for-offers_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/hack-coin-master-app-ios_GM406889139.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/roblox-build-a-boat-for-treasure-free-vip-server_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/coin-coin-master-hack_GM406889139.pdf
    • https://perpustakaan.man2kotaserang.sch.id/repository/roblox-hack-no-recoil-script_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id//repository/minecraft-tiktok-hacks_GM479516143.pdf
    • https://perpustakaan.man2kotaserang.sch.id/repository/how-do-you-get-free-robux-from-roblox_GM431946152.pdf
    • https://perpustakaan.man2kotaserang.sch.id/repository/roblox-apocalypse-rising-hacks-2021_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id//repository/coin-master-for-pc-free-download_GM406889139.pdf
    • http://perpustakaan.man2kotaserang.sch.id//repository/hackear-coin-master-sin-root_GM406889139.pdf
    • http://perpustakaan.man2kotaserang.sch.id//repository/hack-game-plus-com-coin-master_GM406889139.pdf
    • http://perpustakaan.man2kotaserang.sch.id//repository/how-to-get-free-robux-fast_GM431946152.pdf
    • https://perpustakaan.man2kotaserang.sch.id/repository/how-to-hack-roblox-jailbreak-with-cmd-prompt_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032ee.bin
4025b31f2958acd5b27d41fb94e355bc12350c26d7853c44d92169daf265e84b
pdf-font-stream PDF embedded font (sfnt) at offset 0x32EE 23080 bytes
font_01_sfnt_off000066f2.bin
2ce1b04f60e4c80b47c64405ceaf72da3a5020e4bdf17f6f9f83f5bdb45f87ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x66F2 20004 bytes