Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b22f094f4ddf80…

MALICIOUS

PDF

35.4 KB Created: 2021-06-26 02:49:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 234f12759d20319a6b247b5061ab642f SHA-1: 0afa389d92bb5ff93ef5257dd5cee28dbbd19762 SHA-256: d0b22f094f4ddf8087d9c3645630bd95ba57fe9b980cb5c2c12c4c4dc932329d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document contains numerous links to external websites, many of which are SEO-optimized pages related to 'free Robux' or 'Roblox hacks'. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading a payload. The document likely serves as a lure to initiate a download chain, potentially leading to malware execution.

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/working-free-robux-generator-game-hack
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/roblox-private-jet-free_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-roblox-maps_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-hack-filtering-enabled-games-roblox_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/why-does-roblox-servers-shutdown-when-cheat-engine-is-on_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/can-u-get-free-robux-on-roblox_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/roblox-jailbreak-unlimited-free-money-hack_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-roblox-scrpters_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-robux-website_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/roblox-free-robux-scams_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/robux-hack-download-google-chrome_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-hack-wins-on-roblox-martial-arts_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/roblox-how-to-get-free-robux-2021-no-inspect-element_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/roblox-csgo-cheats_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-hack-to-get-nightblade-in-murderer-mystery-roblox_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-get-free-robux-in-10-minutes_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-hack-roblox-to-get-passwords_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/bloxland-free-robux-no-human-verification_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-get-free-robux-inspect-element-august-2021_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-get-free-stuff-in-roblox-2021_GM431946152.pdf
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-medieval-clothes-on-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003207.bin
1cc52d4315f934c8ca91152c83b0dbaefc39208ea8600abd2efea1d80f79624d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3207 22592 bytes
font_01_sfnt_off000064c0.bin
c7b34e546b9d6499f7b7e3a0da256a045372f5d3c26f3db54832aa28cab57ed5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C0 19308 bytes

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