Malicious PDF — malware analysis report

Static analysis result for SHA-256 63d6c39f936c32e3…

MALICIOUS

PDF

42.5 KB Created: 2021-05-13 07:50:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8c99305e3dc54328cc5654d431e59d9e SHA-1: 766026c892967c08b5b2b43c08bb57a5266b9abb SHA-256: 63d6c39f936c32e3d2b2fc9e0ce13fa1ba79987b8ee52333dce6035cdb60b8c6
100 Risk Score

Malware Insights

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

The PDF contains embedded links to known malicious redirector infrastructure, specifically referencing "Coin Master" game cheats to entice clicks. The ML classifier also flagged this PDF as malicious with high confidence. The presence of these links suggests the document is designed to redirect users to malicious websites, likely for downloading further malware or engaging in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/www.haktuts.in-2021-08-coin-master-free-spin-and-coin-link.html-m-1-game-hack In PDF document text
    • http://junktiquecollector.com/images/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/moon-active-games_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://junktiquecollector.com/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://junktiquecollector.com/images/hack-coin-master-xyz_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/how-to-get-free-roebucks_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_off000048e2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E2 23956 bytes
SHA-256: cbabe1dde3c9d89a315e6f3e3aa8e55e9bb0439304391f24a73032b6ae99af71
font_01_sfnt_off00007f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F45 19780 bytes
SHA-256: bf7f2ec23d312a45e96f2d807c6b497bbe2235e066fc4c290a35779047d8ab0d

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