Malicious PDF — malware analysis report

Static analysis result for SHA-256 da52c1396446960e…

MALICIOUS

PDF

34.9 KB Created: 2021-06-17 18:23:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5f0c588d5571548e68181d5e1f057920 SHA-1: 47a08f7dfa8b8a8a261b8b98d83f84c76c0e38bf SHA-256: da52c1396446960e5f5f13183a0434b849049195d9d8ce85b8cb24b0bc58929c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a malicious lure, employing a link farm strategy to direct users to various game-related cheat and hack pages. The document body and extracted URLs strongly suggest a social engineering tactic to trick users into downloading potentially harmful files disguised as game enhancements. 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/roblox-cheats-for-ninja-similar-xbox-one-game-hack
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-a-roblox-account-easy-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/como-ser-hacker-en-roblox-sencillamente_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/buxblast-com-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/best-free-roblox-outfits_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/blogger-coin-master-free-spins_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/robux-free-c_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-hack-script-admin_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/claimrobux-net_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/www-bandicam-com-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-generator-no-human-verification_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-cards-not-used-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-free-exploits_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/pubg-uc-and-bp-hack_GM1330123889.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-apk-july-2021_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/minecraft-pocket-edition-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030ad.bin
ad00d26acb26e08d2e51f7e89a1dbb7bbfa3f941643ea9aae7c38f82f9c484a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30AD 22412 bytes
font_01_sfnt_off0000626a.bin
48c7cde4894616d7d89a3b49dc142cba10e5ec565c6e9437c060ec965f63ad1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x626A 19488 bytes

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