Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0a3c907cf365c4b…

MALICIOUS

PDF

40.8 KB Created: 2021-05-12 06:52:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 18e33ebf0f1836486f4707cea026f4e7 SHA-1: 7750e2655f8b1d21c6a92dd2b4485d605042dea7 SHA-256: c0a3c907cf365c4bd5a907807cb575b90eac94d203b8f0a9528c293dd97ae16e
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/431946152/robux-survey-game-hack PDF link annotation
    • http://mohacad.com/images/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://mohacad.com/images/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://mohacad.com/images/coin-master-hack-pro_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/minecraft-java-edition-free_GM479516143.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
font_00_sfnt_off0000432b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x432B 26100 bytes
SHA-256: 61d2067a5be68f8d9b5cc14f52a7e54af1c8b80b9779271209b142d1bde96764
font_01_sfnt_off00007d50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D50 18144 bytes
SHA-256: 6fd5616ad4ce0c30eb6456aaab9f1a40378a031fa4650db50c22e26f1c4f3de9

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