Malicious PDF — malware analysis report

Static analysis result for SHA-256 61bcf6919c458df4…

MALICIOUS

PDF

42.5 KB Created: 2021-05-19 12:38:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e249d5ea8dccf5e28c8b18f9d180567d SHA-1: 6b4e2eea991439dce88d3961c672cc2a78bce000 SHA-256: 61bcf6919c458df455245f22ffcd492c52150515a3795166c3823e4463e7ebe4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure URL is https://netcdn.xyz/app/406889139/online-coin-master-hack-here-game-hack, which is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack designed to lead users to potentially harmful websites.

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/online-coin-master-hack-here-game-hack In PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/wurst-minecraft_GM479516143.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/free-spins-coin-master-march-2021_GM406889139.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://www.bcph.moph.go.th/ckfinder/userfiles/files/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c04.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C04 24892 bytes
SHA-256: 4541ab415e41b9b0b54e5d6a79489608b27d318e49ee9f1abdc2e70e522a6b2e
font_01_sfnt_off00008556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8556 17788 bytes
SHA-256: d889680f8fc551e7ec9bfaa07df1fa67f8392890936cf776d8bfe8a659ce498a

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