Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db0174db2455ee3…

MALICIOUS

PDF

41.9 KB Created: 2021-05-12 04:59:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fd6757e4b5fe2b76e82150941bc9cdb6 SHA-1: 549d57a11bc8d33f7eb42848747b115187c960d3 SHA-256: 6db0174db2455ee396df11e9111dc63bccce2575b728edd4fa8eba5610e2c7a3
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-unlimited-coins-hack-apk-download-game-hack PDF link annotation
    • https://vstarnippers.com/images/freerubux_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-game_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://vstarnippers.com/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/free-roblox-printables_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-hack-tool-2021_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_off000047ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47BA 24444 bytes
SHA-256: 19b2939ba53ddcc3574eea02e4667999f5678b8df386828b71fbc8d9c05fef8a
font_01_sfnt_off00007f5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5F 18916 bytes
SHA-256: f0d587adf4f6f4957022720a1ba7dc12899eb6a2139247dd603e63f7db2e4ec6

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