Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ae98cbe96275dc…

MALICIOUS

PDF

49.4 KB Created: 2021-06-04 02:08:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8aa233efcbee0023aca927b2ed5a6962 SHA-1: 1faa7dd90dcffc5256798331c5f22431c499430b SHA-256: 67ae98cbe96275dc7fdb640a70a14e0882c92df3c1d71d1e04312a46fda70492
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which appear to be part of a link farm designed to attract users searching for game cheats and hacks. The primary URL, https://netcdn.online/app/431946152/blox-supply-free-robux-game-hack, suggests a lure for free Robux, a virtual currency. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into clicking links that lead to malicious content or downloads.

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/431946152/blox-supply-free-robux-game-hack
    • http://lib.fekon.untad.ac.id/repository/roblox-cheat-codes_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/free-coin-master-hacks-no-verification_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-2021-ios_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-to-get-robux_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-download-minecraft-for-free-ios_GM479516143.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-spins_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-earn-free-pokeballs-in-pokemon-go_GM1094591345.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/robux-download_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/free-robux-2021_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/minecraft-windows-10-hacked-client_GM479516143.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-hacktman_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-pc_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-tool-pc_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-twitter_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/free-robux-com-no-verification_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-instagram-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000517a.bin
e4fdfca28a4954ec59556ac8b715f3f1e127ccd7eeec670cad19ccafbc1c08ba		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x517A 25940 bytes
font_01_sfnt_off00008d69.bin
e974c9c66d22768982f90a4f941c61cf005823f8e4c26a1fc74d08d43a2a5b91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D69 6796 bytes
font_02_sfnt_off00009e03.bin
0902d75613bc39446e97d9d8a05e59c43b59cebedccbae9a4ab3fb6f34b2e91e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E03 18444 bytes

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