Malicious PDF — malware analysis report

Static analysis result for SHA-256 d63184784ac6e912…

MALICIOUS

PDF

41.8 KB Created: 2021-05-12 14:16:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6ebee2161d250748c9458be420444d3c SHA-1: b37d8ca813d951d9dc57f21f022abe8c9d89e28e SHA-256: d63184784ac6e912fb36ad038e82b794028089a52da83353155b45e1aa6a89e5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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/free-spins-coin-master-links-thursday-november-28-2021-game-hack PDF link annotation
    • http://www.notaioricci.it/images/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • http://www.notaioricci.it/images/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/how-to-free-robux_GM431946152.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_off000047ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47CE 23148 bytes
SHA-256: c12ce8303367ee21fac0fbaaae75595c49af4f1920f4452d3c9dc7adbb65271f
font_01_sfnt_off00007c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0A 19860 bytes
SHA-256: d63300f936d8bb545b77e0b0c2e21733cc6fa46b1c79ade6db784861823ff386

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