Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7a03954c4d80189…

MALICIOUS

PDF

46.8 KB Created: 2021-05-12 17:37:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a1a5b883ce6508402c0f1b1395e7de2d SHA-1: 0a6c8bd6288d0d0915b99306bb66237dfbb54c7d SHA-256: e7a03954c4d80189c4e702a213f86601dd76c4f1b3d0ee8742a5149e0b65a6c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains an embedded URI and multiple other URLs that appear to be lures for downloading game-related hacks or cheats. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent. The presence of a "download button" heuristic further supports the conclusion that this document is designed to trick users into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8729

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/coin-spin-game-hack In PDF document text
    • http://librarystkippgribl.com//repository/robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47C5 24296 bytes
SHA-256: d0134f55fecaae2f99d884096c229115f5568d76ae7f03b3ffd42206b3ef0b65
font_01_sfnt_off00007f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6E 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off00008d0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0F 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off000096ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96FF 17392 bytes
SHA-256: 26961c9f14d61c789be320ef33f793128d7856b3f2b2e22dee8a483f9b6c2997

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