Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1e2f21ade8c204…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 13:39:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0eb77aa9e3c27e94fd1dc34517ba35d7 SHA-1: d38b79ab8034f068ef55239d67965923718f2415 SHA-256: ec1e2f21ade8c204367203ed4e91a7c726e5c61cf3875cdffd647221e4716f74
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are presented as hacks or generators for popular games like Coin Master and Roblox. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a deliberate attempt to direct users to potentially malicious or scam-related content. The ML classifier also strongly flagged this PDF as malicious.

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/406889139/haktuts-coin-master-free-spin-today-game-hack
    • https://pt-mataram.go.id/perpustakaan/repository/mcpe-com_GM479516143.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-free-robux-no-human-verification_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-those-who-remain-hack_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/robux-today-hack_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/visenya-roblox-hack_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/lucky-patcher-coin-master-hack_GM406889139.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-generator-no-hack_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-free-premium-roblox_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-online-hack-no-survey-no-password_GM406889139.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-no-buying-games_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/free-tiktok-likes_GM835599320.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/minecraft-mod-menu_GM479516143.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/freespincoin-masterlinkdownload_GM406889139.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/drawing-anime-on-roblox-free-draw_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-daily-spins-link_GM406889139.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-but_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/hack-exploit-for-roblox-no-virus_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-without-human-verification-real_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/acount-info-for-roblox-hack-with-robux_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/cara-cheat-rebirth-roblox-mining-simulator_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000343e.bin
4805401bef6d137771d10b8a7530726f322d48ff58b9ed966ebfcf60d623e437
pdf-font-stream PDF embedded font (sfnt) at offset 0x343E 22420 bytes
font_01_sfnt_off00006617.bin
972c50e57b5d8bef4e8a1a4d64318d2c4a5eeb25991c57ca0d9be4dff359939e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6617 18840 bytes