Malicious PDF — malware analysis report

Static analysis result for SHA-256 3619e6bde76740e2…

MALICIOUS

PDF

47.2 KB Created: 2021-06-14 01:40:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a62d5e43aa5a7d4f23e91359a3ebf973 SHA-1: 2949fbbd7a307074d7026c91de2f6540ffecfa94 SHA-256: 3619e6bde76740e2d2969b359b4f2af14533928de69a5c75207548d239997961
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 0.9977

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/roblox-hack-grab-knife-free-game-hack PDF link annotation
    • http://bressanassessoria.com.br/images/free-tiktok-fans-without-verification_GM835599320.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-robux-vido_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/how-to-get-free-cloth-roblox-2021_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-tiktok-fans-hack_GM835599320.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/slurp-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/tiktok-free-download-2021_GM835599320.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/buy-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004914.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4914 32924 bytes
SHA-256: eb6c2c84b4607c7060261704916bf85d2d7470be8f4ac4a96c1126ac5650a756
font_01_sfnt_off000095fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95FC 18468 bytes
SHA-256: 5bd95e07075def09867adac533e43d93362066595139d52751297eff32eabfca

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