Malicious PDF — malware analysis report

Static analysis result for SHA-256 d05ea46d415ad75a…

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 03:19:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6129c95bf3af160c6410f0d929a2fe3f SHA-1: 08378c82839dc2d196a08073f948812bbbdff923 SHA-256: d05ea46d415ad75a166c7c72067029cc06cb7c1c3716a12cbaf3b80cf65f0410
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a prominent external URI, suggesting a link farm or redirection to malicious content. The 'PDF_SEO_LINK_FARM' heuristic indicates a large number of external links, many of which are likely part of a scam. The 'SE_DOWNLOAD_BUTTON' heuristic further supports the lure of a fake download, and the ML classifier strongly indicates maliciousness. The document body explicitly mentions 'Online Robux Hack No Download' and includes the primary malicious URL.

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/online-robux-hack-no-download-game-hack
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-royale-high-diamond-hack_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-anything-you-want-for-free-on-roblox_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/robux-hacks-without-human-verification-2021_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-best-websites_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-minecraft-skins_GM479516143.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/free-blank-roblox-shirt-templates_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-hack-on-roblox-windows-10-hp-ocober-2021_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/free-spin-links-coin-master-october-30-2021_GM406889139.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-games-that-actually-work_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-hack-into-a-full-server-on-roblox_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-400-spin-link-hack_GM406889139.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-make-free-clothes-on-roblox_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/easy-way-to-get-free-robux_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/free-roblox-admin-exploit_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/free-gifts-coin-master_GM406889139.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/microsoft-free-robux_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/www-rbx-com_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-750k-robux-for-free_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-free-bubble-gum-privat-server_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000311e.bin
48b98a0ee7e7b8d274b0f016f69139dab4ab1f03ebce2e5b2232d188befe28bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x311E 21980 bytes
font_01_sfnt_off000061bb.bin
bc6a80fffba7e9e26decaa1f34cf46b34bbbe49787c19cd08479a7092f2435ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BB 19420 bytes

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