Malicious PDF — malware analysis report

Static analysis result for SHA-256 b07c0477a6149ee6…

MALICIOUS

PDF

33.3 KB Created: 2021-06-28 20:48:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fce172003f477d8127b9b3ee61fe5bfa SHA-1: ac117dded24d48a19616d11459e2825a26dbe6ea SHA-256: b07c0477a6149ee6ab4f8bd382b1172702cbebfee9d72e1faf8958edcb14ecac
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that promotes free in-game currency for popular games, acting as a lure for a malicious download. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or SEO manipulation tactic. The primary URL, http://netcdn.co/app/431946152/free-robux-genereatoir-game-hack, is likely the distribution point for a second-stage payload.

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/free-robux-genereatoir-game-hack
    • https://library.itn.ac.id/perpusitn/repository/free-coins-and-spins-in-coin-master_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-minecraft-realms-for-free_GM479516143.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-cosmetics-in-roblox_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/youtube-free-robux-scam_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/free-robux-generator-without-verification_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-link-ios_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/free-robux-today_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/minecraft-thumbnail-maker-free_GM479516143.pdf
    • https://library.itn.ac.id/perpusitn/repository/hacks-to-get-free-robux_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/script-for-pubg-uc-hack_GM1330123889.pdf
    • https://library.itn.ac.id/perpusitn/repository/free-100-robux-2021_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-welcome-to-farmville-vip-links_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/robux-websites-2021_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-to-free-robux-legit_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-items-in-the-catalog-roblox_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/free-level-7-script-for-roblox_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/roblox-skybox-changer-hack_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/rbxoffers-com-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d65.bin
4d3edf05a4d0b1defaa9b7f8d8114226c8b75a91e086b56471fe736f0d59d914		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D65 21780 bytes
font_01_sfnt_off00005d58.bin
7d94f920091d6669996f82bd4199ab4afdecc3bdd3c810fbe881b06e5d688da6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D58 18940 bytes

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