Malicious PDF — malware analysis report

Static analysis result for SHA-256 442997ffe6efec09…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 22:12:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 03cac80716884a25d5322d730f6d5e23 SHA-1: 1b02d65885aeda72a9d573956ab159a8a6a47f73 SHA-256: 442997ffe6efec09b0eafef242ed5672f439ba86077c0517efe1bdd502cd6fbc
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are SEO-optimized and point to gaming-related topics like free spins and game hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure further supports a malicious intent. The primary goal appears to be directing users to potentially malicious websites via the embedded 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.tw/app/406889139/where-can-i-get-free-spins-for-coin-master-game-hack
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-make-a-minecraft-server-for-free_GM479516143.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/can-i-play-minecraft-for-free_GM479516143.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-hacks-115-2_GM479516143.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-free-robux-without-offers_GM431946152.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-no-human-verifacaition_GM431946152.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/raindrop-roblox-free_GM431946152.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-websites-that-work_GM431946152.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/free-games-like-coin-master_GM406889139.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/free-shark-teeth-roblox_GM431946152.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-hack-someone-on-roblox-easy_GM431946152.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/pubg-uc-50-tl_GM1330123889.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/get-more-robux_GM431946152.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-reward-link-2021_GM406889139.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/hacker-roblox-id_GM431946152.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-hack-without-verification_GM406889139.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/cheats-coin-master-free-spins-and-news_GM406889139.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-100-spin-link_GM406889139.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-counterblox-money-hack-script_GM431946152.pdf
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-gun-games-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003568.bin
da517bc24bd127e4734b34a6b02050994d584dc28fdd2fd9ff4d4db9e0ee7941		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3568 22152 bytes
font_01_sfnt_off000066aa.bin
b12aa12d38c8c524e7797586759798b9ea71944b9981e44aaeae315634813687		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66AA 18540 bytes

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