Malicious PDF — malware analysis report

Static analysis result for SHA-256 20fc20d8320c615e…

MALICIOUS

PDF

48.2 KB Created: 2021-05-12 04:09:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0e6fcdf853fd54b40ab1c59adb8db9d5 SHA-1: 556de423f64efab8c2e2c7342db81a673255e892 SHA-256: 20fc20d8320c615e40c81066eb38a972fc66ef3d96603fd266d4d52661ead6ec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically advertising 'Coin Master Free Spins' and similar game-related lures. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-free-spins-link-today-facebook-game-hack. This indicates a phishing or scam attempt designed to trick users into clicking malicious links. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-free-spins-link-today-facebook-game-hack In PDF document text
    • http://www.metinadistribuzione.com/images/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/free-roblox-hack-us_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B9 30612 bytes
SHA-256: 1271566fb70879665b89a9fc87f7c899a2a8b09a7cea4bc9582dd1f4b917de9e
font_01_sfnt_off00008b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B76 4020 bytes
SHA-256: dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5
font_02_sfnt_off000098fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98FE 18568 bytes
SHA-256: 976bad0f84eadf36fe6397f68da5c043a767fda9c526d6325df07f5c92c7ef85

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