Malicious PDF — malware analysis report

Static analysis result for SHA-256 4765b089fa26a71b…

MALICIOUS

PDF

43.2 KB Created: 2021-05-11 03:02:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 40adbbb27a207684bd58578f118db076 SHA-1: 90d4dc7071c47b59c23289becbcb9277d0b80d0b SHA-256: 4765b089fa26a71b13200ccc2237f31b5f65d2ae8d1edb570fd79c1218783291
102 Risk Score

Malware Insights

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

The PDF contains numerous links to other PDFs, creating a link farm designed to trick users into downloading malicious content. The document body and extracted URLs advertise "Roblox Money Hack" and "free Robux" generators, indicating a scam or phishing attempt. The ML classifier strongly flagged this PDF as malicious, supporting the observed malicious patterns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/431946152/roblox-money-hack-game-hack
    • http://perpus.i2s-learning.com//repository/roblox-download_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/free-robux-generator-2021-no-survey_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/roblox-hack-generator_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/how-to-get-unlimited-robux_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/roblox-free-play-no-download_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/www-free-robux-com_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/get-free-spins-coin-master_GM406889139.pdf
    • http://perpus.i2s-learning.com//repository/get-free-roblox_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/roblox-promo-codes-free-robux_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/coin-master-free-spin-reward-links_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/what-is-a-minecraft-client_GM479516143.pdf
    • http://perpus.i2s-learning.com//repository/how-to-hack-in-roblox-prison-life_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/free-texture-packs-for-minecraft-pe_GM479516143.pdf
    • http://perpus.i2s-learning.com/repository/how-do-you-earn-robux-on-roblox_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/coin-master-real-free-spins_GM406889139.pdf
    • http://perpus.i2s-learning.com//repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/minecraft-free-apk-java-edition_GM479516143.pdf
    • http://perpus.i2s-learning.com//repository/best-free-minecraft-server-hosting_GM479516143.pdf
    • http://perpus.i2s-learning.com/repository/free-minecraft-skin-creator_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a00.bin
b9c43e0ab153f1fcea38d4d129ae44f855f92d34a3c1686dedbe496a4881e9bc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A00 26516 bytes
font_01_sfnt_off000085a1.bin
2877ec179c3d1975899223932944ba0d35aae080e47210864d1f1454656c8d43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85A1 18560 bytes

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