Malicious PDF — malware analysis report

Static analysis result for SHA-256 535021de68b54f84…

MALICIOUS

PDF

47.7 KB Created: 2021-06-03 06:40:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 272063786b083e4abf10d370f25d4ea3 SHA-1: 1fd39cd2ab2d84d5f4ba4d175355fe1888dddaad SHA-256: 535021de68b54f84d9d7ec74f29fbe3b9aee4355d58efbd1d259c683e834ed8b
82 Risk Score

Malware Insights

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

This PDF document is identified as malicious by an ML classifier and exhibits social engineering tactics. It attempts to lure users with a fake game hack download and instructs them to bypass macro restrictions by executing a command, likely to download and run a second-stage payload from the embedded URL. No scripts were extracted, but the PDF's structure and embedded URI suggest a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/479516143/minecraft-free-demo-game-hack
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/minecraft-free-download-android_GM479516143.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coin-master-hack-apk-2021-ios_GM406889139.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/how-to-get-free-robux-promo-codes_GM431946152.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coin-master-free-pet-food-links_GM406889139.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/roblox-robux-generator-2021_GM431946152.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/minecraft-pe-mod-menu_GM479516143.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/robux-adder_GM431946152.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coinmaster-rewards_GM406889139.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/how-to-teleport-using-cheat-engine-roblox_GM431946152.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coin-master-spin-link-2021_GM406889139.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/robux-generator-no-verification-needed_GM431946152.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/is-minecraft-free-on-ps4_GM479516143.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coin-master-game-hack-app-download_GM406889139.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/how-to-get-free-shields-on-coin-master_GM406889139.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/is-coin-master-free_GM406889139.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/hacked-client-for-minecraft-bedrock_GM479516143.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coin-master-hack-no-root_GM406889139.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/free-robux-link_GM431946152.pdf
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/hack-coin-master-343-apk_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005437.bin
b1826e39d6f45f5e9ddbf3be60452c8e8a60df5d8887d1488f66201ef48e4a57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5437 25500 bytes
font_01_sfnt_off00008e72.bin
eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E72 2940 bytes
font_02_sfnt_off00009881.bin
0536168ac90d64eb009e64b37040528b80b37c7a826300234d0294943182c78a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9881 18140 bytes

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