Malicious PDF — malware analysis report

Static analysis result for SHA-256 e12198b80e4a0a45…

MALICIOUS

PDF

42.7 KB Created: 2021-05-15 03:11:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3de2d614c522f2d5adc6036c8ef0e264 SHA-1: 8afee89db1a1c607b311b41986480d146dfce276 SHA-256: e12198b80e4a0a45731dd7ab549e73128b565650e4042999bc5a32180c505463
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting "game hacks" and free currency generators. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-free-coins-link-2021-today-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a social engineering lure designed to redirect users to potentially harmful content, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-link-2021-today-game-hack In PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/weird-roblox_GM431946152.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/free-robux-live_GM431946152.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c98.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C98 24328 bytes
SHA-256: c4173e6a9c1a2bc2f10e37f3f6af25c05855d92b1cf6474d17149912390b49f5
font_01_sfnt_off00008365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8365 18636 bytes
SHA-256: 54ee628be55815102d4fd2b2c16d0cf2d83f73b68c782c007c481b291bfa8535

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