Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2730579c5fbac2c…

MALICIOUS

PDF

34.3 KB Created: 2021-06-26 20:14:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3afcb182c172e7a9812f31b62638be4a SHA-1: 9ff642a934318b514dcf736c9518cc63d3262f3c SHA-256: e2730579c5fbac2cab107e8e1004bcf96baf4a9c40a359619a556ec6e7689ba8
102 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF files related to game hacks and free items. The primary URL, http://netcdn.co/app/431946152/free-black-shirt-roblox-game-hack, suggests a lure for game-related exploits. The heuristic PDF_SEO_LINK_FARM indicates a large number of such links, strongly suggesting a malicious intent to redirect users to potentially harmful content or downloads.

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/free-black-shirt-roblox-game-hack
    • http://ellobo.com.ua/ckfinder/userfiles/files/cute-free-stuff-on-roblox_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/como-obtener-robux-gratis-sin-hackear_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-bird-roblox-id_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/get-free-cards-coin-master_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-hack-mod-apk-35-8_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-free-spins-youthnow_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-hack-download-ios_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-hack-version-download_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/hack-roblox-with-lucky-patcher_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/minecraft-dungeons-free-download_GM479516143.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-pe_GM479516143.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-site_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-roblox-shirt-templates-2021_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/roblox-bloxburg-hack_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-by-watching-ads_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-real-working_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/roblox-super-villain-tycoon-cheats_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-free-fire_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002efa.bin
bb572bc5f14912b247616ca4c0562f276d0ac71c0dd7f9851add980b437c43ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFA 22268 bytes
font_01_sfnt_off00006087.bin
64c8911dd465b2323caabf87bf95e853c476551e39dbe24d4060235df9de7231
pdf-font-stream PDF embedded font (sfnt) at offset 0x6087 19212 bytes