Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb4f7fb0bec7c2d…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 03:46:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f56488bc469cb118330b99e9573bcc28 SHA-1: ac3961cdc8d98e70534612ad1e5e4e0d94ef5483 SHA-256: fbb4f7fb0bec7c2d43d789361dd5dc6d7608bb455ef7c59462cc6abc1786d09c
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 SEO-optimized PDFs related to game cheats and free in-game currency, suggesting a link farm or phishing attempt. The presence of an external URI pointing to a download URL further supports the malicious intent. While no scripts were explicitly extracted, the PDF structure and extensive link farm indicate a high likelihood of malicious redirection or payload delivery.

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/cheats-for-apocalypse-rising-roblox-game-hack
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/how-to-get-free-robux-on-iphone-6s_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/get-free-robux-here_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-robux-no-verification-or-survey_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/how-to-get-roblox-shirts-for-free_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/hacks-para-mad-city-roblox_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/free-roblox-followers-no-survey_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/piano-cheating-hack-roblox_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-free-no-sign-up-no-download_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/how-to-hack-roblox-hacks_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-lua-script-hacks_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/how-can-i-get-free-robux_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/free-robux-free-cards_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-cheat-codes-for-bee-swarm_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/google-roblox-free-robux_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-robux-link_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-robux-master_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/cheat-engine-fly-hack-roblox_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/how-to-get-free-vip-in-roblox-fe2_GM431946152.pdf
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/how-to-hack-alone-batle-royale-with-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003171.bin
13d6ca7265272729dd9e25214efb4e85916c91c13bb136c0cc12d4614fecf555		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3171 22352 bytes
font_01_sfnt_off00006356.bin
f5e45939a40cd571c8c8e764d5291f2dd6532b5c519fa5a2b8d1a625a978df78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6356 19396 bytes

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