Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82696dfd6df5330…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 13:12:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7fa6747085e56a114ef1d55da406c212 SHA-1: 0e314de78aab897c64f9580f30d09e7fee7e71c0 SHA-256: c82696dfd6df53305cf48a85dca871b783e5dfec72ac2aef30964e55de5e1d69
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a document body that promotes "Coin Master Hack" and "Free Robux" lures. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm designed to drive traffic to potentially malicious or unwanted content. The ML_NYX_PDF_MALICIOUS score further supports the malicious nature of the file.

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/coin-master-hack-2021-link-game-hack
    • https://library.institutpendidikan.ac.id/repository/minecraft-windows-10-key-free_GM479516143.pdf
    • https://library.institutpendidikan.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/free-robux-button-pastebin_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/hack-coin-master-apk-download_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/roblox-salvage-hack_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/pokemon-go-free-qr-codes-2021_GM1094591345.pdf
    • https://library.institutpendidikan.ac.id/repository/what-will-happen-if-i-use-cheat-engine-on-roblox_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/roblox-breaking-point-aimbot-hack_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/cheat-roblox-dungeon-quest-installer_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/coin-master-exchange-40-free-spins_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/roblox-orby-for-free_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/how-do-you-get-free-robux-on-ipad-mini_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-link-spin_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/cheat-in-roblox-dragon-ball-z-final-stand_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/free-unlimited-coins-for-coin-master_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/minecraft-hacked-client_GM479516143.pdf
    • https://library.institutpendidikan.ac.id/repository/free-robux-instantly-100-real_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032bb.bin
977717526ff089d0664495bced0d43a00b30f5e61c79e5989024d7c69aa94a9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32BB 22932 bytes
font_01_sfnt_off00006658.bin
8438728008f6ab05b5c9a65d4eeb1f2e5c23a436eadc11c6e76328f72b7d7fb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6658 18408 bytes

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