Malicious PDF — malware analysis report

Static analysis result for SHA-256 585bf34128429b5f…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 05:22:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 05b8480f9040b07141be94d973c7719f SHA-1: 6bb47415fd419ecf3fc968b80822d233583763dd SHA-256: 585bf34128429b5f29a69bf0a2a65b20cd73f3a72e896f00f7c4da0d697e6ab6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external resources, many of which are hosted on domains related to game hacks and cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a coordinated effort to direct users to potentially malicious sites. The ML classifier also strongly flagged this PDF as malicious. The presence of embedded URLs and the document body content, which mentions game hacks, supports the conclusion that this document is designed to trick users into visiting these sites.

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.tw/app/406889139/hack-coin-master-8-ball-pool-game-hack
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/minecraft-pe-free-apk_GM479516143.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/coin-master-free-spins-link_GM406889139.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/how-to-hack-in-roblox-got-talent_GM431946152.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/websites-that-give-free-robux_GM431946152.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/roblox-cheat-engine-the-streets_GM431946152.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/guuudd-info-roblox-hack_GM431946152.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/roblox-promo-codes-for-free-robux_GM431946152.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/coin-master-fb-free-spins-link_GM406889139.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/how-to-get-minecraft-realms-for-free_GM479516143.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/free-robux-today_GM431946152.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/minecraft-bedrock-free-download_GM479516143.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/how-to-get-free-unlimited-robux_GM431946152.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/60-free-spins-coin-master_GM406889139.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/roblox-jailbreak-hack-2021-april_GM431946152.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/free-minecraft-accounts-2021_GM479516143.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/boku-no-roblox-legendary-hack_GM431946152.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/how-to-get-minecraft-java-for-free_GM479516143.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/get-free-spins-for-coin-master_GM406889139.pdf
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/coin-master-hack-link-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033b1.bin
8235968222901f7f83a905dcecff198a9fe65e1166cc0ae568397ff5013e7e23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33B1 22832 bytes
font_01_sfnt_off000066b1.bin
b69c3d00c2ac98c3c6fc57577e45468dd5473d006dfa96fc4aac3661510bb870		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B1 18656 bytes

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