Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a7212c278ce8aaf…

MALICIOUS

PDF

43.3 KB Created: 2021-05-17 03:22:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a7ee8d57d1f4e505ea64788a6eefd040 SHA-1: 04899ed2f5d94b18474a873e6d44c0ea146be13a SHA-256: 3a7212c278ce8aaf23f3d3df55539b8773bdaec8fe17d2cc99c2f4be6f2a77db
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded links and a visual download button, directing users to external sites that host applications. One of the embedded URLs, https://netcdn.xyz/app/406889139/hack-coin-master-3.2-mod-apk-game-hack, is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 3

  • 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/hack-coin-master-3.2-mod-apk-game-hack In PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/fbchampion_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/113-hacked-client_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
stream_003_off00004caa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CAA 25172 bytes
SHA-256: 43137808b67e8952719e2ce7b234664d36cdbc2a98bbe995205037eccb5d46af
font_01_sfnt_off0000864e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x864E 18428 bytes
SHA-256: 079b3165dd07087070801d60b3a3bfa244d98e21bcbdfb300c485c1ab1e92bc8

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