Malicious PDF — malware analysis report

Static analysis result for SHA-256 5515983cb14ddca0…

MALICIOUS

PDF

35.5 KB Created: 2021-06-24 05:54:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 58e4dbad22d9f7a8e64dee150ac28f28 SHA-1: bcbe7272c5529eb9feff9532fd31951a371fc7f5 SHA-256: 5515983cb14ddca0942401556fa3f521645246daca7fdec60b905860d31ee9b0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links designed to lure users into clicking on them by promising game hacks or currency. The primary link, http://netcdn.co/app/406889139/coin-master-hack-ios-no-jailbreak-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit vulnerabilities or redirect users to malicious sites, likely for further payload delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/406889139/coin-master-hack-ios-no-jailbreak-game-hack In PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/5-games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/easy-points-gg_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-In 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_002_off00003402.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3402 23040 bytes
SHA-256: 04478eeb8334b665dd190d085bbf6233247a44f16a481d7f2ad2a0639ef87176
font_01_sfnt_off000067aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AA 18404 bytes
SHA-256: 345b4b10f5918f406b1f79bf6dc118df3430b7a97c564e099ef402e5b5a3dc62

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