Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf53aedfbf9f6301…

MALICIOUS

PDF

43.5 KB Created: 2021-05-16 05:36:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3de756d87c12478f94dc17d05ac45d89 SHA-1: 5ccc4e06624dfa6a99018ea7c6fbc5c633924c58 SHA-256: cf53aedfbf9f6301586d65feb192a27a9986a377a9f6ec007612ebdd2861106f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that point to known malicious redirector infrastructure, specifically designed to lure users with promises of game hacks or free currency. The primary malicious URL identified is https://netcdn.xyz/app/406889139/free-spins-coin-master-blogspot-game-hack. The document body and embedded links suggest a phishing or scam attempt, leveraging common lures for popular games.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/free-spins-coin-master-blogspot-game-hack In PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/best-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://www.visionledindia.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-haktuts_GM406889139.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_off00004dc8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DC8 24972 bytes
SHA-256: 17cf3213935e0fd52dfb97d0b1a5032290ef59f80d0a48e98fd38dabcc0173cd
font_01_sfnt_off0000873a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873A 18464 bytes
SHA-256: 1c6dfc1f98a6641c171a543c2046344b7d819ff3e085ab3ae56c0ac3320f4f50

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