Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c19d2e7a1a3db38…

MALICIOUS

PDF

45.5 KB Created: 2021-05-18 02:05:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 49edd9cb5212099c65752c0a47870348 SHA-1: dde28537b36965718cdbe128b3a292bcf00b0aa6 SHA-256: 7c19d2e7a1a3db385d96576cc108adf3e52e1f02d61171f309f3824170a6589e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The primary link, https://netcdn.xyz/app/406889139/free-daily-spins-coin-master-game-hack, is presented as a call-to-action. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely to download further malware.

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/406889139/free-daily-spins-coin-master-game-hack In PDF document text
    • http://lawpatron.ru/images/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/how-to-free-robux_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_off000048ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48AB 26540 bytes
SHA-256: 326e62e8fc1b7526a936b869f5b2ee91dcbee8fa90264a9b663864ecf102951e
font_01_sfnt_off000085aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AA 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008f5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F5C 18308 bytes
SHA-256: 55eaac4e6bbee5e06de7435d22c867d27a3c8151a397b13177f5239675c95764

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