Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a100167a5da47dc…

MALICIOUS

PDF

34.6 KB Created: 2021-06-18 14:03:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ce853fad6d561887e81213db682e143e SHA-1: 1eeb8b929f9f36c1ec3971671411e527651c0106 SHA-256: 6a100167a5da47dc219bb1bbc71142a5427ec9fcd699f327430f23811c0f72a5
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are hosted on prom2m.ru and offer 'hacks' or 'free currency' for games like Roblox and Minecraft. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to redirect users to potentially harmful content or downloads. The presence of a 'download button' lure further supports this. 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-hack-kostenlos-game-hack
    • https://prom2m.ru/wp-content/uploads/fsqm-files/apps-to-get-free-robux_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/murder-mystorys-roblox-knife-hack_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/www-roblox-com-games-for-free_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/how-to-get-free-minecraft-skins_GM479516143.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/infinite-jump-hack-for-roblox_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/free-robux-2021-no-waiting-instant_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/roblox-jailbreak-free-keycard_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/blox-world-free-robux_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/how-to-bypass-key-systems-on-roblox-cheats_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/hack-for-roblox-wont-get-banned_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/roblox-its-free-gif_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/how-do-i-become-a-hacker-in-roblox_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/robux-hack-2021-generator_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/minecraft-mods-download-free_GM479516143.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/how-to-be-all-black-in-roblox-free_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/can-you-play-minecraft-for-free_GM479516143.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/robux-cheat-engine-2021_GM431946152.pdf
    • https://prom2m.ru/wp-content/uploads/fsqm-files/roblox-prison-break-hacks_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000304c.bin
08664f439c03f40d82a70883451be722c6527cc7aa4a2989283b410f75975b3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x304C 22892 bytes
font_01_sfnt_off0000639a.bin
5e9cd8ff114dcf5368b794e28f7531143cf15a49044c9faf14997fe364975c12
pdf-font-stream PDF embedded font (sfnt) at offset 0x639A 18576 bytes