Malicious PDF — malware analysis report

Static analysis result for SHA-256 be90353adcda84c7…

MALICIOUS

PDF

33.3 KB Created: 2021-06-18 06:20:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a38aa2b69e70af34d570b4c0a866b1c7 SHA-1: 13c611d27ccb409f5156f5db789715ff10e59028 SHA-256: be90353adcda84c7bcbb79a7208aa5ffc4d0f60950a22316ea806e82950438b4
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 game-related cheats and hacks, specifically for Roblox. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and 'PDF_URI' and 'EMBEDDED_URL' confirm the presence of external URLs. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users to click these links, likely leading to phishing sites or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/account-hacker-roblox-patebin-game-hack
    • http://pustaka.industri.ft.unand.ac.id/repository/free-robux-codes-reveiw_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-have-free-hair-on-roblox_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-use-chatbot-hack-roblox_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/hack-for-trasure-hunt-simulator-roblox_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-get-in-to-hacked-roblox-account_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/programa-para-ser-hacker-en-roblox_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-start-hack-in-shinobi-life-roblox_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/roblox-jailbreak-how-to-get-money-hack_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/top-cheat-limited-u-on-roblox_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/free-robux-pin-codes_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/claim-free-robux_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/free-robux_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/free-powerful-gun-on-nuclear-plant-tycoon-roblox_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/roblox-script-hack_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/cheat-in-roblox-free-robux-pc_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-hack-counter-blox-roblox-offensive_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/roblox-btools-hack-2021_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/free-roblox-accounts-with-robux-no-pin_GM431946152.pdf
    • http://pustaka.industri.ft.unand.ac.id/repository/roblox-ninja-legends-cheat-engine_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b16.bin
64d6b647c287c925eb91892154fc0a80da164df1695cab88e54d23bbadc54d30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B16 22444 bytes
font_01_sfnt_off00005d0c.bin
05a5394a3613f72ed28c8566aa75166efd09fc75ee8973547d1fd1ad45b373cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0C 19176 bytes

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