Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a6ece33e03962e7…

MALICIOUS

PDF

45.6 KB Created: 2021-05-15 00:33:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9fc14362708a99e2393fa267dee6dc11 SHA-1: 990a7963f040170e4a1d331505ee5321cdca29d0 SHA-256: 3a6ece33e03962e73ed57bb46d82fc766c0e9c7fad2a032bb2602b36071bf5fa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, designed to trick users into visiting potentially harmful websites. The primary lure directs users to 'netcdn.xyz' with a filename suggesting instructions for Roblox hacks. The document body, though partially corrupted, contains similar thematic elements and the same primary URL. The presence of multiple embedded URLs and the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic indicate a clear intent to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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-use-scripts-in-roblox-hack-game-hack In PDF document text
    • https://www.mrsz.ir/images/toolbox-mod_GM479516143.pdfIn PDF document text
    • https://www.mrsz.ir/images/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.mrsz.ir/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.mrsz.ir/images/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://www.mrsz.ir/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.mrsz.ir/images/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mrsz.ir/images/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://www.mrsz.ir/images/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • https://www.mrsz.ir/images/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • https://www.mrsz.ir/images/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • https://www.mrsz.ir/images/rbxdemon_GM431946152.pdfIn PDF document text
    • https://www.mrsz.ir/images/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • https://www.mrsz.ir/images/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • https://www.mrsz.ir/images/coin-free-master_GM406889139.pdfIn PDF document text
    • https://www.mrsz.ir/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.mrsz.ir/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mrsz.ir/images/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • https://www.mrsz.ir/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://www.mrsz.ir/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.mrsz.ir/images/free-robux-2021_GM431946152.pdfIn 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_off00004971.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4971 25204 bytes
SHA-256: 2822da78eae4494a6bae30fe4bd2190f1bec1ad6a95ffa97e0d96452739b571f
font_01_sfnt_off000083c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C8 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00008d89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D89 18932 bytes
SHA-256: fce9e652f89a1af62f774ff2b7937cf54d78de2903c3939778e1916a8682391a

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