Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ceb65553de77fc…

MALICIOUS

PDF

44.1 KB Created: 2021-05-15 07:09:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b617f1322e4f34caf56899d224ef501c SHA-1: ec09484b2a5aaf9757e8a1576ce8f3e5269f98f6 SHA-256: 67ceb65553de77fc9c00934166ec0478d813df413f261f10a666a959b650c429
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' and game hacks. The primary lure URL is https://netcdn.xyz/app/431946152/how-to-get-free-robux-no-verification-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful sites. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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/how-to-get-free-robux-no-verification-game-hack In PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/how-to-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/roblox-font-free_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account_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_off00004b08.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B08 27296 bytes
SHA-256: 97fa0865ab1abc489073ab2d22a2cb8eeb734f699941fb2cb99109c8fa1fed8b
font_01_sfnt_off00008893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8893 18764 bytes
SHA-256: a0d8f559ae1a84b7fc559fdee6dca3899797d6ff6e3d64572866459a8961df23

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