Malicious PDF — malware analysis report

Static analysis result for SHA-256 d39d0f47a45e4ea3…

MALICIOUS

PDF

46.4 KB Created: 2021-06-03 11:39:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 851f29e139881c07b4a851f2bd145c5e SHA-1: edc1d7301644e85dac6189788381638aa821bac2 SHA-256: d39d0f47a45e4ea357a7f0dadb54ce2936510337f929fbf34e9b71727a4b4146
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to URLs promising game hacks and free currency, such as 'https://netcdn.online/app/406889139/coin-master-cheats-without-verification-game-hack'. The ML classifier and specific heuristics strongly indicate malicious intent, likely to lure users to a phishing or malware distribution site. No scripts were extracted, but the document structure and embedded URIs are sufficient for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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/coin-master-cheats-without-verification-game-hack PDF link annotation
    • http://pustaka-smpn3tpi.com/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/www-robux-com_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/best-hacked-client_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-spin-coin-master-link-download_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005075.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5075 24984 bytes
SHA-256: 3fb3a86d5410741b5aac962ce37a9ce4d72d5b08c3804139d3cee83f3ff5f39a
font_01_sfnt_off000088e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E7 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off000092d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D2 18184 bytes
SHA-256: 33e400d717f86a6ea07319c748b98304611e431877c971fbf79fb896875f79a3

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