Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b7d3729dec6e54a…

MALICIOUS

PDF

45.8 KB Created: 2021-05-19 05:13:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 51916b8bb9b352077315d0b9eb5f46f4 SHA-1: 7664f93b71e518af93deef6c5a9cd8be523a361d SHA-256: 4b7d3729dec6e54a5b0fe384b8be838b1f91fcb5fe3801f62811a39a5a82f157
82 Risk Score

Malware Insights

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

The PDF contains a malicious ML classifier score and exhibits social engineering tactics, specifically a 'ClickFix' lure instructing the user to press Win+R or paste a command. It also contains numerous embedded URLs, one of which is a direct link to a suspicious domain, suggesting an attempt to trick the user into downloading or accessing malicious content related to game hacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/minecraft-pe-hacks-ios-game-hack
    • http://learningarabic.co.uk/images/giftrobux-com-generator_GM431946152.pdf
    • http://learningarabic.co.uk/images/roblox-robux_GM431946152.pdf
    • http://learningarabic.co.uk/images/coin-master-hacks-no-surveys_GM406889139.pdf
    • http://learningarabic.co.uk/images/minecraft-hacks-list_GM479516143.pdf
    • http://learningarabic.co.uk/images/coin-master-raid-hack_GM406889139.pdf
    • http://learningarabic.co.uk/images/robux-app_GM431946152.pdf
    • http://learningarabic.co.uk/images/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdf
    • http://learningarabic.co.uk/images/get-free-robux-generator_GM431946152.pdf
    • http://learningarabic.co.uk/images/minecraft-account-hacked_GM479516143.pdf
    • http://learningarabic.co.uk/images/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdf
    • http://learningarabic.co.uk/images/redeem-roblox-card-free_GM431946152.pdf
    • http://learningarabic.co.uk/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • http://learningarabic.co.uk/images/coin-master-free-spins-usa-2021_GM406889139.pdf
    • http://learningarabic.co.uk/images/get-free-robux-no-human-verification_GM431946152.pdf
    • http://learningarabic.co.uk/images/roblox-images_GM431946152.pdf
    • http://learningarabic.co.uk/images/coin-master-free-cards-2021_GM406889139.pdf
    • http://learningarabic.co.uk/images/coin-master-hack-game-download-ios_GM406889139.pdf
    • http://learningarabic.co.uk/images/roblox-avatar-editor-free_GM431946152.pdf
    • http://learningarabic.co.uk/images/roblox-admin-hack_GM431946152.pdf
    • http://learningarabic.co.uk/images/free-robux-without-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d42.bin
dd44f4a695f755541b628cc884cd5b306664f8757ab5fe88d3afbb1648bbfc9f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D42 26076 bytes
font_01_sfnt_off000086fd.bin
dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86FD 3056 bytes
font_02_sfnt_off00009170.bin
fbc64332b03f0750ddeb2eacbb62e3ca259962fbc5170a7e54e3809c144f3302		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9170 18036 bytes

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