Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b96694d0ee08227…

MALICIOUS

PDF

43.2 KB Created: 2021-05-16 01:36:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b7e44aa63626c74abca146bb6d134eec SHA-1: e734daa046665186b72a1124d8cfd6f264d1fb13 SHA-256: 6b96694d0ee08227b5fcf1e3b965493fff8b313ededa031f1ce209392b02b014
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous external links, many of which are part of a link farm designed to appear as legitimate content. The primary lure, 'Free Robux Mobile Game Hack', and the associated URLs suggest a phishing or scam attempt to trick users into downloading further malicious content or visiting malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

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/free-robux-mobile-game-hack
    • https://c2o-library.net/catalog/repository/roblox-gift-card-for-free_GM431946152.pdf
    • https://c2o-library.net/catalog/repository/free-gold-cards-in-coin-master_GM406889139.pdf
    • https://c2o-library.net/catalog/repository/coin-master-hack-2021_GM406889139.pdf
    • https://c2o-library.net/catalog/repository/can-i-get-minecraft-windows-10-for-free_GM479516143.pdf
    • https://c2o-library.net/catalog/repository/coin-master-tiradas-gratis-link_GM406889139.pdf
    • https://c2o-library.net/catalog/repository/coin-master-hack-apk-facebook-login_GM406889139.pdf
    • https://c2o-library.net/catalog/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • https://c2o-library.net/catalog/repository/coin-master-invite-friends-hack_GM406889139.pdf
    • https://c2o-library.net/catalog/repository/roblox-free-robux-no-verification_GM431946152.pdf
    • https://c2o-library.net/catalog/repository/robux-boost_GM431946152.pdf
    • https://c2o-library.net/catalog/repository/minecraft-114-4-download-free_GM479516143.pdf
    • https://c2o-library.net/catalog/repository/how-to-cheat-in-roblox_GM431946152.pdf
    • https://c2o-library.net/catalog/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdf
    • https://c2o-library.net/catalog/repository/free-minecraft-education-edition_GM479516143.pdf
    • https://c2o-library.net/catalog/repository/hack-spin-coin-master_GM406889139.pdf
    • https://c2o-library.net/catalog/repository/free-daily-spins-coin-master-2021_GM406889139.pdf
    • https://c2o-library.net/catalog/repository/free-robux-generator-without-verification_GM431946152.pdf
    • https://c2o-library.net/catalog/repository/coin-master-hack-apk-with-fb-login_GM406889139.pdf
    • https://c2o-library.net/catalog/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdf
    • https://c2o-library.net/catalog/repository/tower-of-hell-roblox-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b4f.bin
99f1b6c9be0e458d91c6e70936ae02b27e76d0325e4a8616c72e726ef62ad266
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B4F 26132 bytes
font_01_sfnt_off00008683.bin
0c312729e80e6e0ca2ee9f4904992f86151ccd5d23fc73e43cbe09e8497f8a48
pdf-font-stream PDF embedded font (sfnt) at offset 0x8683 18404 bytes