Malicious PDF — malware analysis report

Static analysis result for SHA-256 0671ff8735495e08…

MALICIOUS

PDF

44.5 KB Created: 2021-06-07 10:06:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2020d5e4350dd5804e21683c0326565c SHA-1: f37a1ff224e2f23fbe6808cecef2f77d0acdbd2f SHA-256: 0671ff8735495e083b195c24bf2ede67965846e01972d68833ac1ae7110add2a
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a website promising free Robux, a common lure for scams. The ML classifier also flagged this document as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/growbox.net-free-robux-game-hack In PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/free-coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/how-to-make-roblox-clothes-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
font_00_sfnt_off00004fc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC6 25812 bytes
SHA-256: 0e76a7b44d06d49e7aecc1e7f864913bcbb3bd9588f41b38278f634da0c54d8d
font_01_sfnt_off00008b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4C 18348 bytes
SHA-256: 88239a21e1ee1840de21cd9f6ebb58515048903e6839a8e5f02b62ad6effc887

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