Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6bdcbff3dff553…

MALICIOUS

PDF

41.8 KB Created: 2021-05-16 04:43:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 58efae5a598d66b2cbca3d51b47ae919 SHA-1: dcd27f34190db5b8a4ce4550054b881e7de4ba4e SHA-256: fe6bdcbff3dff553b9cbb727dcf5a0044417f01fe5390a139672f9a5cf105ed1
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to pages related to game hacks and cheats. The presence of a fake CAPTCHA heuristic indicates a social engineering attempt to trick the user into interacting with the document, likely to download or visit malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/406889139/como-hackear-coin-master-espaol-game-hack
    • http://i-koinoxrista.gr/images/is-roblox-free-on-ps4_GM431946152.pdf
    • http://i-koinoxrista.gr/images/get-free-robux-no-human-verification_GM431946152.pdf
    • http://i-koinoxrista.gr/images/robuxy-com-free-robux_GM431946152.pdf
    • http://i-koinoxrista.gr/images/free-robux-on-iphone_GM431946152.pdf
    • http://i-koinoxrista.gr/images/coin-master-vip-hack_GM406889139.pdf
    • http://i-koinoxrista.gr/images/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdf
    • http://i-koinoxrista.gr/images/free-spins-generated-from-coin-master_GM406889139.pdf
    • http://i-koinoxrista.gr/images/legit-free-spins-coin-master_GM406889139.pdf
    • http://i-koinoxrista.gr/images/coin-master-hack-online-generator-without-human-verification_GM406889139.pdf
    • http://i-koinoxrista.gr/images/best-tricks-co-robux_GM431946152.pdf
    • http://i-koinoxrista.gr/images/free-robux-youtube_GM431946152.pdf
    • http://i-koinoxrista.gr/images/free-roblox-followers-generator_GM431946152.pdf
    • http://i-koinoxrista.gr/images/hack-version-of-coin-master_GM406889139.pdf
    • http://i-koinoxrista.gr/images/how-to-get-free-robux-without-human-verification_GM431946152.pdf
    • http://i-koinoxrista.gr/images/free-spins-coin-master-ios-2021_GM406889139.pdf
    • http://i-koinoxrista.gr/images/how-to-block-someone-on-coin-master_GM406889139.pdf
    • http://i-koinoxrista.gr/images/free-coins-coin-master-ios_GM406889139.pdf
    • http://i-koinoxrista.gr/images/master-coin-free-spin-daily_GM406889139.pdf
    • http://i-koinoxrista.gr/images/roblox-hack-app_GM431946152.pdf
    • http://i-koinoxrista.gr/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004867.bin
9b7803feca4a7c6bdc8a242d725937247619a319ac66ce9bada7ae519afe46f9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4867 24864 bytes
font_01_sfnt_off0000811c.bin
123f8386315a91293958179ffe58ecd8d69104faea04a921c44476c066c42c52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x811C 18224 bytes

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