Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e010fdb59ec710c…

MALICIOUS

PDF

35.1 KB Created: 2021-06-19 09:27:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 085d5a63ce76680bc0f3830ac9bca1ba SHA-1: b2f23e9926adf0201451e104688c2ffea0ab3427 SHA-256: 7e010fdb59ec710cdbbe7def132c4e43456776ccf9e93ec5f0f7b2bcf90bff41
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external resources, many of which are hosted on `pertonacademy.co.uk` and promise game hacks. The primary URL `http://netcdn.co/app/406889139/no-human-verification-hack-for-coin-master-game-hack` suggests a download lure for a game hack. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being used for malicious purposes, likely to deliver a second-stage payload.

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/406889139/no-human-verification-hack-for-coin-master-game-hack
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/how-to-hack-roblox-june-2021_GM431946152.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/coin-master-key-free-spin_GM406889139.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/coin-master-codes_GM406889139.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/how-to-make-a-robux-hack-code_GM431946152.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/coin-master-hacks-to-get-spins_GM406889139.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-apk-33-download_GM406889139.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/dominus-roblox-free_GM431946152.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/minecraft-xray-hack_GM479516143.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/free-robux-that-actually-works-2021_GM431946152.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/earn-robux-today_GM431946152.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/minecraft-diamond-finder-hack_GM479516143.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/free-robux-codes-generator_GM431946152.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-31-march-2021_GM406889139.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/goo-dot-gl-hnkqwp-replace-dot-with-free-robux_GM431946152.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/roblox-hack-com_GM431946152.pdf
    • https://www.pertonacademy.co.uk/admin/ckfinder/userfiles/files/sites-to-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032a7.bin
b3e54b4bec6b35eb48bc608a4be1fcc7ad52539d2b9646b7dba8bff07dd76166
pdf-font-stream PDF embedded font (sfnt) at offset 0x32A7 22720 bytes
font_01_sfnt_off00006556.bin
580ae3985eb451e622a586ea94a21f987f0b69dcb066026194f369fa5f147a7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6556 18700 bytes