Malicious PDF — malware analysis report

Static analysis result for SHA-256 77b279416b9b0269…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 07:09:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3977ae982abad5fe4938c69532be514d SHA-1: 787bfb764c694a82e2e3b6de3461a8fc03e08f31 SHA-256: 77b279416b9b0269d760508118788e80c764494e44d48f9c2ba6d812958d3dd1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs social engineering tactics, presenting itself as a game hack or cheat to entice users to click on embedded links. The heuristic 'SE_CLICKFIX' indicates the document likely instructs users to execute commands, a common method to bypass security restrictions. The presence of numerous URLs associated with game cheats and hacks further supports this malicious intent, suggesting the document acts as a lure for downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.xyz/app/479516143/how-to-minecraft-for-free-game-hack
    • https://kojak-group.com/userfiles/files/free-robux-group_GM431946152.pdf
    • https://kojak-group.com/userfiles/files/minecraft-116-free-download_GM479516143.pdf
    • https://kojak-group.com/userfiles/files/coin-master-free-spins-gratis_GM406889139.pdf
    • https://kojak-group.com/userfiles/files/1x1x1x1-roblox-id_GM431946152.pdf
    • https://kojak-group.com/userfiles/files/coin-master-hack-without-verification-2021_GM406889139.pdf
    • https://kojak-group.com/userfiles/files/roblox-script-hack_GM431946152.pdf
    • https://kojak-group.com/userfiles/files/what-is-exploiting-in-roblox_GM431946152.pdf
    • https://kojak-group.com/userfiles/files/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdf
    • https://kojak-group.com/userfiles/files/coin-master-free-spins-link_GM406889139.pdf
    • https://kojak-group.com/userfiles/files/roblox-rape-hack_GM431946152.pdf
    • https://kojak-group.com/userfiles/files/roblox-hack-site_GM431946152.pdf
    • https://kojak-group.com/userfiles/files/roblox-gift-card-free-codes_GM431946152.pdf
    • https://kojak-group.com/userfiles/files/coin-master-daily-free-spins-blogspot_GM406889139.pdf
    • https://kojak-group.com/userfiles/files/play-coin-master-for-free_GM406889139.pdf
    • https://kojak-group.com/userfiles/files/coin-master-free-coin-hack_GM406889139.pdf
    • https://kojak-group.com/userfiles/files/wurst-hacked-client-112-2_GM479516143.pdf
    • https://kojak-group.com/userfiles/files/free-roblox-hair-to-wear_GM431946152.pdf
    • https://kojak-group.com/userfiles/files/free-spin-coin-master-ios_GM406889139.pdf
    • https://kojak-group.com/userfiles/files/robux-converter_GM431946152.pdf
    • https://kojak-group.com/userfiles/files/www-coin-master-hack-xyz_GM406889139.pdf
    • http://www.freenom.comHey
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004929.bin
ec37301aed4295443f6db6b2a9c2f16fd0b0b62d9028659edddf0fb3ec5b8d34
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4929 24532 bytes
font_01_sfnt_off0000818d.bin
34f4f209811985126907d7d3a0424133b48c05c486b67c85b9a962c5d68635fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x818D 17872 bytes