Malicious PDF — malware analysis report

Static analysis result for SHA-256 433cf4169d2ca6e0…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 02:15:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: af3985b3c11c4414d058342a9390ffa4 SHA-1: c54512a67386946bdb7ac47b0d4942e47d357d79 SHA-256: 433cf4169d2ca6e050086a75eb4c696582ac968f609f50b40765bfe4a587377b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a document body that promotes game cheats and hacks, specifically for Roblox. The heuristic firings indicate a link farm and an ML classifier strongly flagged the PDF as malicious. The primary URL, http://netcdn.co/app/431946152/hack-roblox-ultimate-driving-dinero-infinito-game-hack, likely serves as a download or redirect to a malicious 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/hack-roblox-ultimate-driving-dinero-infinito-game-hack PDF link annotation
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-roblox-accounts-forums_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/soporte-para-reportar-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-make-your-own-game-whith-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-200-dollar-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-hack-prestons-account-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/error-connecting-pipe-3-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-walk-through-walls-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-tool-credit-card-cheat_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-get-free-robux-and-fast_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-cool-things-in-roblox-that-charecters-played_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-free-robux-add-to-chrome_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-jailbreak-free-money-march-2021_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-table-cheat-engine_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-case-clicker-hack-script_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-bee-swarm-simulator-free-honey-generator_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31CD 21884 bytes
SHA-256: c8f944d242f005561d78eb1e59954df4b19e86e547e5c46f0957b3ec13a90933
font_01_sfnt_off00006209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6209 19420 bytes
SHA-256: 78b042eed89fbd1534a40003c105c34ec1715f7e477139404ea99def8cc5f53d

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