Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0518bc4a202fe4a…

MALICIOUS

PDF

41.7 KB Created: 2021-05-15 05:30:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 77d2cd0bd1d15a3b02c308425830ff29 SHA-1: caf3d6ab5d6aef2c7a1e523e86c73408105153b7 SHA-256: b0518bc4a202fe4a59b9fae11b76aee8e64659af179260ea328c0a16540f66cf
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many of which are SEO-optimized and point to game-related content, suggesting a link farm designed to attract users seeking cheats or hacks. One primary URL, https://netcdn.xyz/app/406889139/coin-master-apk-mod-hack-download-game-hack, is directly associated with downloading an application. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted, but the overall structure and linked content indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-apk-mod-hack-download-game-hack
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-spins--coins-2021_GM406889139.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/hack-coin-master-32-mod-apk_GM406889139.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/minecraft-java-server-hosting-free_GM479516143.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-hack-account_GM406889139.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/daily-free-spins_GM406889139.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-hack-pro-gamers_GM406889139.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-hack-golden-card-in-coin-master_GM406889139.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-firebird-card-free_GM406889139.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-buy-robux-for-free_GM431946152.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-robux-that-actually-works-2021_GM431946152.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-mod_GM406889139.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-hack-android-root_GM406889139.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/buxblast-com-robux_GM431946152.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/hack-card-collection-coin-master_GM406889139.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-robux-discord_GM431946152.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-1-coin-master_GM406889139.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-2021_GM406889139.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-using-es-file_GM406889139.pdf
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/blox-world-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004997.bin
519ba3b98eba43396c503774ad8503439713222edf3385c131b9fb69bb425605		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4997 23732 bytes
font_01_sfnt_off00007fa9.bin
5bc0de2c636e77828c86a011ee4eef73512f75bfa2aaa85a990f8b4c327860b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA9 18472 bytes

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