Malicious PDF — malware analysis report

Static analysis result for SHA-256 033af7c71bcc8f03…

MALICIOUS

PDF

27.2 KB Created: 2021-07-19 08:40:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 239e0ebb1103c744d54fc3069bfb60f6 SHA-1: 8901fe79a25cba2f92295589c5bfc76728d8745e SHA-256: 033af7c71bcc8f03ffabb8ac3920f6df72f6e5f7da932779a1fb1875a55db112
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, masquerading as generators for game currency like Coin Master and Robux. These links are designed to lure users into clicking them, likely leading to further malicious content, phishing pages, or potentially unwanted applications. The ML classifier also flagged this PDF as malicious, reinforcing the suspicious nature of the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 3

  • 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.
  • 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-free-spins-promo-code-game-hack PDF link annotation
    • http://doganov.be/images/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://doganov.be/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/robux-hack_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • http://doganov.be/images/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002aaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAA 23020 bytes
SHA-256: f16f1fed5f22f8afc1bde1188d0a331c2c3e34246168c5bcc2a3df1da9b845a9

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