Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d39289f1db3a1d…

MALICIOUS

PDF

35.2 KB Created: 2021-06-20 00:14:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 536d4dada5798eb45e5ffba92f6f7046 SHA-1: 806e272a0eebc58e9fe4586c1b239c81278dd749 SHA-256: b0d39289f1db3a1da4eaa4cd3b9e889d1ee20b37e9cf950ce43e8d7176a270b2
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically advertising free in-game currency or hacks. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a visual download button further supports the lure of a malicious workflow. No scripts were extracted, but the embedded links are the primary vector for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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 http://netcdn.co/app/431946152/www.free-robux-genorater.com-game-hack In PDF document text
    • http://library.imz.or.id/repository/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/robux-get-com-free_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-fe-roblox-script_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/hacks-para-roblox-2021-para-todos-los-juegos_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-flip-master-coins_GM406889139.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
font_00_sfnt_off00002fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE6 22868 bytes
SHA-256: c01485dea22537ab1777e1b6797e775e50818fb7ffc205d2e8d6e881d7753bd6
font_01_sfnt_off00006350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6350 19376 bytes
SHA-256: d569de915a84ee3706d1703342ff61a951f0cd295f42bc911f2afcff0c668a24

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