Malicious PDF — malware analysis report

Static analysis result for SHA-256 67b2e292edd2b784…

MALICIOUS

PDF

35.0 KB Created: 2021-06-28 04:55:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c364485e3b4d48369369d27d56c03e71 SHA-1: 22500cb923604e8c949d1b4bed1985f170376cc2 SHA-256: 67b2e292edd2b784aa633ddce3db5c5ddd461d9caf7468bf94f5ff33be6751ec
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, forming a link farm that directs users to sites offering game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of a download button lure suggests an attempt to trick users into downloading further malicious content. While no scripts were directly extracted, the overall structure and URL distribution are indicative of a phishing or malware distribution scheme.

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-funds-groups-roblox-game-hack
    • http://lib.stie-aub.ac.id/repository/mining-inc-mammoth-hack-roblox_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/free-coin-master-androd-cheats-2021_GM406889139.pdf
    • http://lib.stie-aub.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/where-to-get-free-tiktok-followers_GM835599320.pdf
    • http://lib.stie-aub.ac.id/repository/things-that-are-for-free-in-roblox_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-items-on-roblox-ios_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/coin-master-free-gifts_GM406889139.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-look-good-on-roblox-for-free_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/minecraft-for-ipad-free_GM479516143.pdf
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdf
    • http://lib.stie-aub.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/robux-survey_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/www-free-roblox-games-com_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-hack-robux-on-roblox-download_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/roblox-free-vip-server_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/roblox-hacks-and-cheats_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/comment-avoir-des-free-robux_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/roblox-hack-apk-download-android-1_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdf
    • https://www.roblox.com/.I
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003376.bin
ef8fde2efe8f8cd5245bafdfe9753b3ff1418b72080f63a905cfc222e83d03fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3376 21760 bytes
font_01_sfnt_off0000637c.bin
d6b1d2259584ebbbb5e3085d8a89ebc2f81e1f953433508f1bbca18110ce19b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x637C 19140 bytes

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