Malicious PDF — malware analysis report

Static analysis result for SHA-256 720fd4275ff12e34…

MALICIOUS

PDF

44.2 KB Created: 2021-05-16 07:33:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 04bf2e1984218687b4694dce878f9219 SHA-1: 1134f3f37328ce8db9bbd402a4cc5a5bf6f9c679 SHA-256: 720fd4275ff12e34daee62a3826d54df33dd64f794e010882df29c42f7e48911
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game items and hacks to entice users. It contains multiple links to known malicious redirector infrastructure, including the primary URL 'https://netcdn.xyz/app/431946152/free-roblox-codes-2021-game-hack'. The document's structure and embedded links strongly suggest it is designed to lead users to potentially malicious websites, likely for credential harvesting or malware distribution.

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/431946152/free-roblox-codes-2021-game-hack In PDF document text
    • https://learnwmf.org/image/data/files/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/fast-robux-online_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/real-free-robux-generator_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_off0000480b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x480B 29020 bytes
SHA-256: 5186ec6b455d1ecf27088a05f7f200da0ea88decbb07c776cb1e28c4f1ea7e25
font_01_sfnt_off000089ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89AD 18524 bytes
SHA-256: 2cb7cffe6898b24bffb42f458692356b56cf8186bc9d806687ffddb45d527cfe

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