Malicious PDF — malware analysis report

Static analysis result for SHA-256 76c1954c10009b17…

MALICIOUS

PDF

34.3 KB Created: 2021-06-26 19:49:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 631a34a632a5e44ced0cd77a3a6de889 SHA-1: 5479d00d1e6e8204da6a361e14d015f51e70cc61 SHA-256: 76c1954c10009b17c90af9945244f9052f33ec9a82554f40c086b6d2ed03a470
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a document body that promotes 'free Robux' and game hacks, indicating a lure for users to visit malicious websites. The heuristic 'PDF_SEO_LINK_FARM' suggests a large number of external links were generated, likely to distribute malicious content or for SEO manipulation. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or malware distribution scheme.

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/431946152/how-to-get-free-robux-in-roblox-youtube-game-hack
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/hacks-para-roblox-2021-para-todos-los-juegos_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-code-for-roblox-unicorn_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-with-inspect-element_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/how-to-hack-someones-roblox-account_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/hack-roblox-aimbot_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/roblox-tiny-tanks-hack_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/hack-para-jailbreak-roblox-pc_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-robux-hack-meep-city_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-roblox-to-play-without-downloading_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-links-coin-master_GM406889139.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-coins-on-coin-master_GM406889139.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-robux-no-offers_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-doge-mask-in-roblox_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/robux-gratis-funciona-hack-sin-cortes_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/robux-hack-windows_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/roblox-descargar-hack_GM431946152.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/minecraft-texture-packs-free-download_GM479516143.pdf
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/roblox-btools-hack-august_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f87.bin
fdfb70990e51e86c46a6d5fc88c419116cf5d0570a97ea83b7c97dfc02a7b4b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F87 22208 bytes
font_01_sfnt_off00006068.bin
e335ef7825635fd60319b7d9c6b32550e8ebd71940ff4329d59e029604f70695		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6068 19220 bytes

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