Malicious PDF — malware analysis report

Static analysis result for SHA-256 5da7f76604d48e81…

MALICIOUS

PDF

42.7 KB Created: 2021-05-19 08:00:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c2f5a07982f89954c63821014e943705 SHA-1: 7ae0dbbea934aa95c70ec28f81db41809760b171 SHA-256: 5da7f76604d48e81833b9effafd32ef47eb8fa95fde82c00cc782ce7428b7575
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous external links, many of which are SEO-optimized and point to sites offering free in-game currency or hacks for popular games like Roblox and Coin Master. The ML classifier strongly indicates maliciousness, and the presence of a download button lure further supports a phishing or scam attempt. The document's primary function appears to be directing users to external sites that likely host malware or facilitate scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-fast-game-hack
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-minecraft-education-edition_GM479516143.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-without-human-verification-2021_GM431946152.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-facebook_GM406889139.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/wurst-client-download_GM479516143.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/getrobux-ninja_GM431946152.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-download-pc_GM406889139.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/master-coin-hack-app_GM406889139.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-links-2021_GM406889139.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/what-is-a-minecraft-client_GM479516143.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-spin-hack_GM406889139.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-promo-code_GM406889139.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/open-coin-master_GM406889139.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-without-downloading-anything_GM431946152.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-ios-without-verification_GM406889139.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/cheats-coin-master-free_GM406889139.pdf
    • https://agama.denpasarkota.go.id/new/public/ckfinder/userfiles/files/www-roblox-com-robux-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004dbd.bin
7cf150ee9bfe4397ba3fa66f3006f68ca1a32765e57ac4913203b8d5582df215		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DBD 23968 bytes
font_01_sfnt_off000083da.bin
7aab2f7b5cdd23eaead05a2c9912e4a9dcd99cb50fd9423eae012b149ac71853		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83DA 18512 bytes

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