Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b2e4682bb4f87fe…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 18:53:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9e63bdf2cd7d30380feb6e7118ba000b SHA-1: 400929b136a2815ad1346a479e97e7b28aabf9b3 SHA-256: 0b2e4682bb4f87fe3e1ebc0f76a5b8267ebef2f87514a268ad4cbcd16d8e653e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, including one pointing to 'netcdn.tw', which are likely part of a link farm designed to lure users into clicking on deceptive content. The document body and extracted URLs suggest a scam related to free Robux or game hacks, aiming to trick users into downloading malicious files or visiting phishing sites. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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.tw/app/431946152/free-robux-no-mobile-number-game-hack
    • http://library.itekes-bali.ac.id/repository/free-robux-that-actually-works-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-blood-shirt-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-xyz-2021_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-geht-free-robux-no-human_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-games-no-scams_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-make-own-roblox-shirt-free_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/best-free-survival-games-on-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/cheat-engine-god-mode-script-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/generador-de-robux-hack_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/chad-the-beast-and-audrey-the-hacker-in-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-play-games-that-cost-robux-for-free_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-daily-free-spins-link-today-blog_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-safe_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/spin-coin_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/vehicle-simulator-roblox-money-cheat_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/get-free-robux-gg_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-2021-2021-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-automatice-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/come-hack-my-account-youtube-roblox_GM431946152.pdf
    • https://www.roblox.com/my/tasks
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003253.bin
98a51d0c51f90139a809dd47500cdbda15d5a4146329ce696acbe46ab701f9f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3253 22476 bytes
font_01_sfnt_off0000648d.bin
7fea5b209a5fdeca4390cf7308a26692c3d79112d2521aebddc70f68c7483877		 pdf-font-stream PDF embedded font (sfnt) at offset 0x648D 19368 bytes

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