Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f39b43e43d02a43…

MALICIOUS

PDF

45.2 KB Created: 2021-06-03 07:53:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9052cc0826b0d915ac5f361acb8eb244 SHA-1: 713f4d956b60d5d8d4c26c5bde900615dafdbcef SHA-256: 8f39b43e43d02a4340cbb130b69377f2836ee262bc1a725b1c51d1b764369850
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack generator, which is a common lure for malicious redirects. The embedded URL, https://netcdn.online/app/406889139/hack-coin-pro-coin-master-game-hack, is the primary indicator of this malicious activity. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.online/app/406889139/hack-coin-pro-coin-master-game-hack PDF link annotation
    • http://library.fisip.upnvj.ac.id/repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-many-tiktok-free-folowers-make_GM835599320.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-coins-coin-master-2021_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_004_off00005019.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5019 28464 bytes
SHA-256: d6944f59fd4398fcc0d40f03a72232dc32a4f4aefca0cc576b750320eb6448a8
font_01_sfnt_off00008f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F56 17868 bytes
SHA-256: 8414f5d689964aeb56a8bb0109c3531c9ea2311b4dd6f38a0b43982a4f3b1952

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