Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e9a4191f2e30f9…

MALICIOUS

PDF

36.1 KB Created: 2021-06-18 00:56:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 070f640314df5f7b4ab9aefd608d6ed9 SHA-1: d85cefd5daf0d3a513ec5d4008c516348f2b9231 SHA-256: 58e9a4191f2e30f9934dd1c6f2dc1dd71f2f4ba4e77f72b22359f8c279855183
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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-without-download-pc-game-hack PDF link annotation
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/pokemon-go-free-battle-pass_GM1094591345.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-builders-club-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-sued_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/my-account-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/delete-tool-lua-roblox-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-2021-code_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/easy-robux_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_off000033ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33AC 22400 bytes
SHA-256: e385a38b4735bcd95b360e973d8d5bc81a684565ec420ad8496e4137149af943
font_01_sfnt_off0000651b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651B 20036 bytes
SHA-256: 49eab95d6d33726c1efce158dac1d76d928089a9daa678787f7bb32962a60caa

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