Malicious PDF — malware analysis report

Static analysis result for SHA-256 69767ac93527c07d…

MALICIOUS

PDF

42.2 KB Created: 2021-05-12 05:21:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c13f4cf705300afe78e11c7b0dfd2cf2 SHA-1: bc6274e4d73863f0622e22af3b63121c057839cb SHA-256: 69767ac93527c07d0bba299bdce72b3b0ec36600aeb7634dcc76bd1d3697a98c
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-hack-android-2021-game-hack PDF link annotation
    • http://unifieo.br/images/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/get-more-robux_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/wurst-112_GM479516143.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_off00004ad5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD5 24636 bytes
SHA-256: 36bba121d83edfa4b805b0b84b09bfe7d9ac7872369c69164aa4e57e38a1f29e
font_01_sfnt_off00008278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8278 18292 bytes
SHA-256: 2eef875b4bf5d22316b1cf45c42803dae8a296212e229986f5bc4c17bc069cb6

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