Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0f1e90a62e8341f…

MALICIOUS

PDF

45.2 KB Created: 2021-05-13 12:05:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 93914c66ae9197fca11b77f500e2fc92 SHA-1: 7bcd0717db5dc48df7d415d964ab1a9ad1937c48 SHA-256: c0f1e90a62e8341f58ca58c91c7fdb143906e4c56332b52f54cbe75c8b2ba4b4
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 generator' lures for popular games. The primary redirect URL is https://netcdn.xyz/app/406889139/coin-master-free-coins-and-spins-2021-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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-master-free-coins-and-spins-2021-game-hack In PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-free-master_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/robux-premium_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/robux-free-online_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-cheats-for-free-spins_GM406889139.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_off0000494c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x494C 25124 bytes
SHA-256: ea659693f739cac209a6eecd8d39c4f06656183c90b9d693f447a56433da0049
font_01_sfnt_off00008354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8354 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3F 18460 bytes
SHA-256: 9b9248072d2421e664493d6d5ab14406474bc62db1d786ff94b6c1680f0f8261

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