Malicious PDF — malware analysis report

Static analysis result for SHA-256 68d86c9348c71f27…

MALICIOUS

PDF

43.0 KB Created: 2021-05-12 05:47:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d0e34892d5b996693cc03a069f84e671 SHA-1: 2e7f538a30c6662db4e456baac2d0dc1058da4f1 SHA-256: 68d86c9348c71f279ebf0a02c70489f9a04e3a55c202cffef37227517ba53765
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 0.9971

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.xyz/app/406889139/coin-master-free-spin-link-today-50-game-hack PDF link annotation
    • https://tokunfome.com.br/images/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/roblox-cp_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-free-link-spin_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
stream_003_off00004b1d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B1D 25400 bytes
SHA-256: b7d79d08132f49f9096a137684f326ad0ff6c5a790028251d16a059e133e920f
font_01_sfnt_off0000841c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x841C 18716 bytes
SHA-256: 34d71a1e16074585b92cedabb87dd12f76b262856d377b8410846490f9b2f930

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