Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed158e9d3d6c7fc…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 22:10:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c10bf4927514bf4d0ee315fb53a8b7e1 SHA-1: 3e6a5969b14ce3fdb429860e657cccea6bb93066 SHA-256: 2ed158e9d3d6c7fca9572646e9d6e0a58399390a8af67cc90eff77258fd77e73
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a document body that promises free in-game currency, acting as a lure for users to click on these links. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to redirect users to potentially malicious sites or scams. The ML classifier also strongly flagged this PDF as malicious.

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/free-robux-for-free-game-hack
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-links-for-coin-master-2021_GM406889139.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/op-rewards-free-robux_GM431946152.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/master-coin-hack-apk_GM406889139.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/auto-clicker-free-for-roblox_GM431946152.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-stuff-in-roblox-catalog-2021_GM431946152.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-chest-coin-master_GM406889139.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-no-download_GM431946152.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/robux-generator-no-verification-needed_GM431946152.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/static-moonactive-net-rewards-2021_GM406889139.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-today-2021_GM406889139.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-robux-live_GM431946152.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-no-survey_GM431946152.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-robux-no-verification-needed_GM431946152.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-2021_GM406889139.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/websites-that-give-you-free-robux_GM431946152.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification_GM431946152.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-minecraft-java-edition-codes_GM479516143.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/how-can-you-get-robux_GM431946152.pdf
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/roblox-prison-life-cheats_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003123.bin
f930d17b6e1065ceca50fe0251aea5319d8c54086f8dc3e794383fa5a8f6f5dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3123 21912 bytes
font_01_sfnt_off0000619a.bin
ae86725dd70d168e8b5a24377d7effb3bd88f81667aa3e091abc0f5759eb354b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x619A 18716 bytes

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