Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee6b60f851d9dd4…

MALICIOUS

PDF

35.5 KB Created: 2021-06-26 23:19:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 679bc1dbc6d6ae565ef1785908412152 SHA-1: 23cd732653685db30c2d451b2531e6fef572dcdc SHA-256: 6ee6b60f851d9dd4f78f46fd0ad0307426b8b75c4a4ae23e30677a07a9e96368
102 Risk Score

Malware Insights

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

This PDF document was generated by wkhtmltopdf and contains a large number of embedded URLs, forming a link farm. The document body and URLs suggest a lure for users seeking game hacks or in-game currency, such as 'Robux' for Roblox. The presence of a visual download button and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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/como-descargar-roblox-hackeado-con-robux-game-hack
    • http://elibrary.smknesbu.sch.id/repository/hilton-hotels-hack-roblox-vermilion_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/https-free-robux-hack_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/hacks-for-da-hood-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-tuto-robux-no-hack_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-stuff-links_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-dragon-ball-final-stand-hack_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/wahoo-gaming-co-roblox-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/descargar-fly-hack-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/robux-gratis-hackear_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-2021-link_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-gold-cards-hack-english_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-coins_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-jake-paul-merch-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-glasses-on-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/give-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/pastebin-hack-robux-gratis_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-hack-download_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-jailbreak-hackfree-unlimited-money-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_off00003121.bin
cd06f4587c3db50e80f5ddca7fe964041f23384ac451176256cedf40300f611c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3121 22872 bytes
font_01_sfnt_off00006495.bin
fdade916988d42d822c7d68449c927d65ae3e21337e6cd6685e9e13c52b80622		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6495 19400 bytes

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