Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f277008eb68fea5…

MALICIOUS

PDF

48.6 KB Created: 2021-06-03 09:25:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d2036da46911ad69aaed726c604c58fc SHA-1: 3c376893ad79ba131a20be5e1d54de24bdaee8cc SHA-256: 4f277008eb68fea5891aa6acc28270704e8384e9bbeb354ed10dc3825da8449f
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 related to game hacks and cheats, suggesting a lure for users to download potentially malicious files. The presence of a 'download button' heuristic further supports this. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/406889139/coinmasterfree-game-hack
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-hack-version-download-2021_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-spin-ml_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/minecraft-free-download-windows_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/minecraft-build-hacks_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/can-i-download-minecraft-for-free_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/free-spins-on-coin-master-2021_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/free-roblox-hack_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/minecraft-anarchy-server-no-hacks_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-free-link-today_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-free-spins-hacktman_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-levels_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/is-roblox-free-on-xbox_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-free-spins-and-coins-generator_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/twitter-coin-master-free-spins_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-get-roebucks-on-roblox_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-hack-software-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052b8.bin
6b0e6047ec36a997c1af470329ddd1b22be1c1463e98c72bb4b369924befa90f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52B8 24544 bytes
font_01_sfnt_off00008ae2.bin
d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE2 7332 bytes
font_02_sfnt_off00009cfb.bin
ed5fdd5441acd06a3bb02758ac945137dbfa7be696a0962169bf0eb95ec74bb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CFB 17808 bytes

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