Malicious PDF — malware analysis report

Static analysis result for SHA-256 0274dae02b369894…

MALICIOUS

PDF

46.6 KB Created: 2021-05-16 18:09:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c796fbeda76578e7b8fb5ddef438b8fa SHA-1: 714ea98bdae6260dc87e6b98f3c432aa53c3887e SHA-256: 0274dae02b369894c029865f21067986e6e7e7d1aa470c25475d65766d04ad59
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, forming a link farm, and presents a lure related to 'Free Robux Generator'. The ML classifier strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious sites, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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/free-robux-generator-2021-game-hack
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-ios-no-human-verification_GM406889139.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-hack-coin-master-game_GM406889139.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-online-hack-2021_GM406889139.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-invite-friends-free-spins_GM406889139.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-today-new_GM406889139.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-programmers_GM406889139.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-studio-free-download_GM431946152.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-game-download-mod-apk_GM406889139.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-strategy_GM406889139.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-link-spin_GM406889139.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-spin-links-coin-master-2021_GM406889139.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/can-you-get-minecraft-windows-10-for-free_GM479516143.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/real-robux-generator_GM431946152.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-com-free-robux_GM431946152.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-spin-coin-master-game_GM406889139.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-account-roblox-with-robux_GM431946152.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/what-do-roblox-points-do_GM431946152.pdf
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c1f.bin
5008384af36d473117255eefaf94d4e459dbaaff2bcc19553e73f6a067cdd805		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C1F 30928 bytes
font_01_sfnt_off00009279.bin
fca1806ffff7593a0a2d811b077fe14576afb362c0c2e8ffc695fbf8edc3964d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9279 18748 bytes

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