Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e9058e624f9e961…

MALICIOUS

PDF

34.0 KB Created: 2021-06-27 13:10:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 064190050b6ded8ccc59e1d4f73e943f SHA-1: e6ef67ecaa62906a1527013da53351638a76069b SHA-256: 3e9058e624f9e96141b5c5dc24079d30442b1ba0060c57db43bb7fa40785a951
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are presented as download links for game-related cheats and exploits, such as 'roblox-exploit-injector-hacks-game-hack'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for such content. 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-exploit-injector-hacks-game-hack
    • http://stiepariperpus.web.id/sarjana/repository/free-robux-hack_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/free-spins-coin-master-october-17-2021_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana//repository/www-coin-master-hack-com_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/robux-generator-no-human-verification_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/roblox-hack-players-download_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/free-spin-coin-master-twitter_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/does-cheat-engine-still-work-on-roblox_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/roblox-svg-free_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-hack-tool-access-online-generator_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana//repository/robux-for-kids_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/hack-spin-coin-master_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-thumbnail-in-roblox-studio_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/toolbox-for-mcpe_GM479516143.pdf
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/how-to-look-like-a-guest-in-roblox-for-free_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/roblox-free-hair-boy_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana//repository/moonactive-coin-master-free-spins_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-easy_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d86.bin
88aa086becbd5caaff437a500a597be261dff1d2da6c79ceac7e3de198d57de5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D86 22396 bytes
font_01_sfnt_off00005f31.bin
ae8f570a873f3529b84f8a58b1ee7bf7f67c434fef5cb27e81822fd4358b2375		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F31 19244 bytes

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