Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a90bb7ead9e30a7…

MALICIOUS

PDF

34.5 KB Created: 2021-07-09 09:34:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ebfd23f479df5b7cb7f7853757d1e92f SHA-1: fc056e0da47250185457ffa3733609c0927f3547 SHA-256: 6a90bb7ead9e30a789ac8520f435290947f76cb696152498b0a534da6167877f
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.tw/app/406889139/coin-master-hack-spin-160-pro-game-hack PDF link annotation
    • https://www.donjastubica.hr/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://www.donjastubica.hr/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/coinmaster-com_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/pubg-40-uc_GM1330123889.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-robux-websites-that-work-2021_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-promo-codes-robux_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-sound-id-roblox_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/roblox-cheat-farbe_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/minecraft-client-download_GM479516143.pdfIn PDF document text
    • https://www.donjastubica.hr/files/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-to-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-to-get-free-robux-no-hack-no-download_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_002_off00002f92.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F92 22704 bytes
SHA-256: 9e098feaf5f0e02883d161ac67d9053f455982eb4a94ab4b116deb6f00ae1920
font_01_sfnt_off0000625e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625E 18780 bytes
SHA-256: af4936e3ccb6416df15e8de664b166a9aa200208572627e4f7bda013e34b6fdb

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