Malicious PDF — malware analysis report

Static analysis result for SHA-256 7585171ab84c1897…

MALICIOUS

PDF

34.8 KB Created: 2021-06-27 00:09:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e9c7572124615473b93c6e653a58e6cd SHA-1: 7006599eb4ad32e66ddf6af987a3e088cd1b49d3 SHA-256: 7585171ab84c189799d88e77d62bfdedc6f934fea3161ea0dedcf257aeaf3aa4
102 Risk Score

Malware Insights

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

The PDF document contains a prominent link to 'http://netcdn.co/app/431946152/hack-weight-lifting-simulator-roblox-game-hack', presented as a download for game cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for cheats. The ML classifier also flagged this PDF as malicious with high confidence.

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/hack-weight-lifting-simulator-roblox-game-hack
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/rblx-gg-robux-free_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/easy-robux-today-for-free_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/how-to-hack-roblox-for-robux_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/best-maps-to-hack-fly-hack-on-roblox_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/roblox-hacked-client-esp_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/roblox-hack-cheat-engine-65_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/redeem-card-codes-free-roblox_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/roblox-jailbreak-hack-free_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/free-robux-without-human-verification_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/free-wallpapers-for-roblox-fps-games_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/html-robux-free-30_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/is-it-easy-to-hack-on-roblox_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/codes-to-get-free-robux_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/minecraft-games-to-play-for-free_GM479516143.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/follow-people-inyo-roblox-games-hack_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/hack-roblox-net-one-handynummer_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/robux-hack-zero_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/free-tix-roblox_GM431946152.pdf
    • https://apply.skubi.eu.org/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f77.bin
84e91bbfadcf75b00fee2982458e74cd162b6d8e6a76a9a0d25d82c622b77602		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F77 22392 bytes
font_01_sfnt_off0000615e.bin
666209a0d57a5aa52ee9c0576697dde9a4cc526ead18e9b1ba5c039662ad0148		 pdf-font-stream PDF embedded font (sfnt) at offset 0x615E 19644 bytes

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