Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f87110c306190b7…

MALICIOUS

PDF

42.7 KB Created: 2021-05-14 21:06:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2221f984f96b5a7659386214226afc78 SHA-1: ab519e16d15eedb56a3f53afd20d99e0c159464e SHA-256: 3f87110c306190b71bf29170ae9d6a36240c7b7b7d94b00ff00797d51d0b4cb3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "Coin Master Hack" which redirects to a malicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure itself facilitates the redirection, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-hack-ios-2021-game-hack PDF link annotation
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/can-i-play-minecraft-for-free_GM479516143.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_off00004aba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ABA 25720 bytes
SHA-256: 5702ed5232df0d914b2c556c99f2a9ca9879c3cbc3a68a93b9b855e329137a3c
font_01_sfnt_off000084e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E6 18116 bytes
SHA-256: 663054a01704a270a88e5c65db4cbe82af3fd3dd58587b1cb05b092ffe619ba9

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