Malicious PDF — malware analysis report

Static analysis result for SHA-256 cde08b2d7ac64a4e…

MALICIOUS

PDF

34.6 KB Created: 2021-06-20 02:14:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8c38cc04eeb6ab4f68f154f53c647a2f SHA-1: dbaee909a852312ed19f45b1d8dae1990e6ae976 SHA-256: cde08b2d7ac64a4e03aec7ba95e272e10448e82645d2ae5dc75047983e225cee
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that explicitly advertises hacks and free in-game items for popular games. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for cheats. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves luring users to download potentially malicious content via these links.

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-online-hack-2021-game-hack PDF link annotation
    • http://pustaka.faterna.unand.ac.id/repository/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-gift-card-free-delivery_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/denis-t-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/como-ganar-robux-facil-sin-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/www-roblox-passwords-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-pet-simulator-how-to-get-a-free-dominus_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-2021-no-hack-or-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/hack-blox-piece-roblox-give-mod-menu_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-generator-2021-no-information_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/hacks-para-roblox-2021-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-free-modles_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/cheat-engine-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F55 22520 bytes
SHA-256: b4177adb130223fa27ac906246b00ea19bea7d4b37ec83ea2a62957e7085b4f2
font_01_sfnt_off000061e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E1 19180 bytes
SHA-256: b10b31d8f4c3cdd7f36a077e25e9d643f674684302ac54d575ad5ad03573847a

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