Malicious PDF — malware analysis report

Static analysis result for SHA-256 395ec8cef34cd898…

MALICIOUS

PDF

48.2 KB Created: 2021-06-10 22:32:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b5b2b8c821f12f0c2f7c7aa60140e1e3 SHA-1: 12ad39d8adf3e94c13e9ad697b6f95cc7a4c197f SHA-256: 395ec8cef34cd8987c7b78d32fc981ac8097e4b52e64e12a50c75b9fff361998
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 0.9871

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 https://netcdn.tw/app/431946152/real-roblox-hack-cheat-engine-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/dfield-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robloxcom-how-to-get-free-robux-only-today_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/best-free-coin-master-spins_GM406889139.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_off00005207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5207 31880 bytes
SHA-256: 672bf73705473b562a4cfef26907d6949a135ff437895aa6bb9190ef05641425
font_01_sfnt_off00009888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9888 18860 bytes
SHA-256: 38ed062d27011b3fb6a85e8562af6d787f790b9665a42e9c3e460bd6cc51df1d

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