Malicious PDF — malware analysis report

Static analysis result for SHA-256 23450f53966dcf57…

MALICIOUS

PDF

34.2 KB Created: 2021-06-28 20:37:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 33e054684ae0e335be07dde80e41f850 SHA-1: 3ca7d553acc5aa146ede999b64585f309c241d6d SHA-256: 23450f53966dcf575e90e6737537e336c506ac28f0b5a2b260979cd0ee915753
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a heuristic firing for a 'PDF_SEO_LINK_FARM' indicates a large number of external links, many of which are disguised as game hacks or cheats. The ML classifier also flagged this PDF as malicious. These findings suggest the document is designed to trick users into downloading malicious files from these links.

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-dominus-empyreus-free-game-hack
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-dangongusee-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-cheat_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-clothes-for-roblox-and-no-survey-or-download_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-online_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/hack-money-vehicle-simulator-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-people-on-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-fun-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-stop-roblox-from-crashing-when-hacking_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-code-that-work_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/hacked-roblox-game_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/robloxhacks_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/minecraft-java-edition-key-free_GM479516143.pdf
    • http://elibrary.smknesbu.sch.id/repository/robux-free-gift-card-org-hack_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/john-doe-roblox-hacker-in-real-life_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-hack-tool-download_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/games-that-can-give-you-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/hack-roblox-volar_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/blackout-hack-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_off00002eb5.bin
94e3c0dc87c79a22316dbd22c6563f483d18ab6aa45537dd43c2b37d0a42aa75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB5 21876 bytes
font_01_sfnt_off00005ec7.bin
2f0a78326c6bf571f2e4636cb1dcb856cf9e0913febf4637918db0ef675a15c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC7 19696 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.