Malicious PDF — malware analysis report

Static analysis result for SHA-256 501905533b89c623…

MALICIOUS

PDF

34.7 KB Created: 2021-07-01 16:35:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 821e8600d3d6c9149b2f89944bb82b66 SHA-1: 225737610ac87ec57a79984f886a9dee549f125b SHA-256: 501905533b89c6233ccaf1ab34f6d78c6488c7ad8e249f48712ad4b718eb46ef
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a 'download button' lure, suggesting an attempt to redirect users to malicious sites. The document body and extracted URLs indicate a lure related to 'free Robux', a common theme in scams. The ML classifier also flagged this PDF as malicious with high confidence.

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/get-easy-free-robux-game-hack
    • http://e-pustaka.stkipadzkia.ac.id/repository/roblox-voohack-com-free-robux_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/roblox-synapse-free-download-2021-feb_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/roblox-lua-executor-free_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-robux-groups-popular_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-to-get-free-robux-why-bc_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/elsaiyan-roblox-hack_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/get-free-robux-now-easy_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-to-get-free-suits-from-catalog-roblox_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/roblox-clothes-codes-to-get-for-free_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/roblox-no-kick-hack_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-robux-icu_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-robux-meme_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-to-hack-pokemon-brick-bronze-roblox-2021_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/hack-card-collection-coin-master_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/youtube-cheat-central-robux-july2021_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-robux-card-codes_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003147.bin
6b4736686dd8f7af57514c01007c30906a9ff94eea14868a8ddf5a174cf598db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3147 22272 bytes
font_01_sfnt_off000062ab.bin
b4346c77ce482f386f8c0f9549db9d841e7ad0790207abb14adfb3897e5e9222		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62AB 19000 bytes

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