Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9433e48f1ee4cf2…

MALICIOUS

PDF

35.9 KB Created: 2021-06-29 13:36:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 689d569e26ed08137cff87606039696f SHA-1: 185bbee04435e62d0c0cb96e94e0559b5ab1a76e SHA-256: f9433e48f1ee4cf26eac8b28654be1fbae9c9e2a3dd695f4a027ef0e80c570a0
102 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a malicious lure, likely intended to trick users into downloading further malware. The presence of a "PDF_SEO_LINK_FARM" heuristic, numerous embedded URLs pointing to game-related hacks and free currency, and a "SE_DOWNLOAD_BUTTON" heuristic strongly suggest a phishing or scamming attempt. The ML classifier also flagged this PDF with high confidence, indicating a malicious classification.

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-make-your-own-hacks-for-roblox-game-hack
    • https://perpustakaan.unitomo.ac.id/repository/minecraft-pe-free_GM479516143.pdf
    • https://perpustakaan.unitomo.ac.id/repository/how-to-hack-phantom-forces-roblox-lvl-hack_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/break-free-roblox-music-video_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/roblox-lumber-simulator-2-hack-script_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/hacking-into-my-brothers-roblox-account_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/get-free-robux-now_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/earn-free-robux-today_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-robux-for-free-on-laptop-2021_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/how-to-hack-roblox-accounts_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/free-roblox-card-generator-no-download_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/noob-vs-pro-vs-hacker-vs-god-roblox-bloxburg_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/hack-roblox-no-virus_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/robux-com-free-robux_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/roblox-free-clothes-2021_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-all-pass-for-free-in-greenville-roblox_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/dll-aimlock-hack-roblox_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-1-million-robux-free-birth_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-no-phone-number_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003288.bin
54a754875e56988f0d0aff5962d77b8b165ce100b7367ad0fe8510ca5e565272		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3288 22928 bytes
font_01_sfnt_off00006629.bin
45636eb323438fb2e55ed3a3273e77ad150cf41e156aac453e1b6a1ea12b43e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6629 19480 bytes

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