Malicious PDF — malware analysis report

Static analysis result for SHA-256 9305b590bc8b6f4a…

MALICIOUS

PDF

34.4 KB Created: 2021-06-27 15:34:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3f690e5354f660bb04687d2df9dce8dd SHA-1: c906dfee28f91c4d5b16c4368545301d9d2d89cc SHA-256: 9305b590bc8b6f4ab28cab6335889dd4a7d82b6e76bc74b90176b11a988484b3
102 Risk Score

Malware Insights

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

The PDF document contains numerous links, including a primary URL pointing to a 'program-hack-roblox-game-hack' executable. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, many of which are related to game hacks and cheats. This suggests the document is designed to trick users into downloading malicious software disguised as game cheats or exploits.

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/program-hack-roblox-game-hack
    • http://egorplitka.ru/images/roblox-hack-computer_GM431946152.pdf
    • http://egorplitka.ru/images/how-do-you-hack-somebody-in-roblox_GM431946152.pdf
    • http://egorplitka.ru/images/free-robux-without-human-verification_GM431946152.pdf
    • http://egorplitka.ru/images/hacks-client-for-roblox-wild-revolvers_GM431946152.pdf
    • http://egorplitka.ru/images/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdf
    • http://egorplitka.ru/images/how-to-get-everything-free-on-roblox-2021_GM431946152.pdf
    • http://egorplitka.ru/images/hacks-on-roblox-grand-theft-auto_GM431946152.pdf
    • http://egorplitka.ru/images/how-to-get-free-pet-food-in-coin-master_GM406889139.pdf
    • http://egorplitka.ru/images/coin-master-in-app-purchase-hack_GM406889139.pdf
    • http://egorplitka.ru/images/cheats-for-roblox-vehicle-simulator_GM431946152.pdf
    • http://egorplitka.ru/images/lv-7-roblox-hack_GM431946152.pdf
    • http://egorplitka.ru/images/daily-free-spin-coin-master-link_GM406889139.pdf
    • http://egorplitka.ru/images/coin-master-free-coins-and-spins_GM406889139.pdf
    • http://egorplitka.ru/images/roblox-how-to-join-builders-club-for-free_GM431946152.pdf
    • http://egorplitka.ru/images/how-to-make-a-roblox-hacking-program_GM431946152.pdf
    • http://egorplitka.ru/images/minecraft-redeem-code-free_GM479516143.pdf
    • http://egorplitka.ru/images/www-free-robux_GM431946152.pdf
    • http://egorplitka.ru/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://egorplitka.ru/images/free-spin-coin-master-link-2021_GM406889139.pdf
    • http://egorplitka.ru/images/coin-master-hack-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e72.bin
944cca14c6bcd9a180205b3ce8ecb6312e620a361731dc86214ac106baf506ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x2E72 22672 bytes
font_01_sfnt_off0000614f.bin
98eff764f8121658827ca334bff6db88c8b527ce8d33929b7917b51436e2046c
pdf-font-stream PDF embedded font (sfnt) at offset 0x614F 19072 bytes