Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6d6b4efc07af4a4…

MALICIOUS

PDF

44.5 KB Created: 2021-05-17 03:02:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bd9c90d3129dd7fc37ea2131170d1ac5 SHA-1: a1aac2ebec56334e2a965db7140194337fa1ce25 SHA-256: c6d6b4efc07af4a446c19cddb1da50d8fe99b976a39af5f28823b3ad86f48698
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector. The primary lure appears to be a 'free generator / game hack' which redirects to the URL https://netcdn.xyz/app/479516143/do-you-get-windows-10-minecraft-for-free-with-java-game-hack. This suggests a phishing or scam attempt to direct users to potentially harmful content or further malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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 https://netcdn.xyz/app/479516143/do-you-get-windows-10-minecraft-for-free-with-java-game-hack In PDF document text
    • https://nexsoftech.com/upload/userfiles/files/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://nexsoftech.com/upload/userfiles/files/free-robux-download_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
font_00_sfnt_off00004ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EBF 25276 bytes
SHA-256: 8662fdb384ee3eccfd7c0a6bfe953cf91e8193d90240af02c058be750e165e11
font_01_sfnt_off0000881b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x881B 19440 bytes
SHA-256: 4f6116c3ae1f04b8b6121a0b0d1b9b447449cf69c412c2009f2ae6d1f9a529b7

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