Malicious PDF — malware analysis report

Static analysis result for SHA-256 498dc00ca3b23daa…

MALICIOUS

PDF

44.8 KB Created: 2021-05-19 20:52:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a15b1171df9236b8f5ea54b37862dca5 SHA-1: 95f4461643217fab1a3d8db6daa1b4fd30244f2b SHA-256: 498dc00ca3b23daa950cd3577ed0aae2bee7c2fffb0e573305324bbf4d4503f4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as "game hacks" or "free generators". The primary lure URL is https://netcdn.xyz/app/479516143/minecraft-free-demo-game-hack, which is associated with a high number of redirector links. The document body, though heavily obfuscated, contains references to the lure URL and the authoring application, suggesting a deliberate attempt to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/minecraft-free-demo-game-hack In PDF document text
    • https://www.jjpremiers.com/files/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-hack-without-verification-for-iphone_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • https://education.minecraftIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b80.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B80 24880 bytes
SHA-256: f2866db882f43878239b17af73078b8b0026f38d5817fa02bb8f907d2129e7a2
font_01_sfnt_off00008360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8360 2856 bytes
SHA-256: 8c5d9bcb386d88c7f99323d8d482e46ea21dea038a5b842744dd5d39b26b2c44
font_02_sfnt_off00008d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D37 18140 bytes
SHA-256: 0536168ac90d64eb009e64b37040528b80b37c7a826300234d0294943182c78a

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