Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba7f2c201c2b48cd…

MALICIOUS

PDF

42.4 KB Created: 2021-05-13 08:08:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8d969add4b343282270f9db2705c8b1a SHA-1: 845d335816e32e9fbad9df989b5a526b49da757e SHA-256: ba7f2c201c2b48cd3199015e2d69f4a1205f28ce5e84db59c6a2c4baa2bd07bc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, many of which point to pages offering game hacks or cheats for 'Coin Master'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract traffic or distribute malware. The ML classifier also strongly flagged this PDF as malicious. The presence of these links and the nature of the content strongly suggest 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-mod-game-hack
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/roblox-getting-hacked_GM431946152.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-coin-and-spin-in-coin-master_GM406889139.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-coin-master-coins-and-spins_GM406889139.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-hack_GM406889139.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links-twitter_GM406889139.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/links-to-get-free-spins-on-coin-master_GM406889139.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-get-2021-robux-for-free_GM431946152.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-robux-redeem-codes_GM431946152.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-robux-no-verify_GM431946152.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-cards-for-free_GM406889139.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/roblox-printables-free_GM431946152.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/robux-fun-hack_GM431946152.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/earn-free-spins-coin-master_GM406889139.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-hack-a-minecraft-server_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c41.bin
6ea4d9e2d9fbb0443488af83f8c42d068816f087f15dbd8ee0af05261bb0e491		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C41 24516 bytes
font_01_sfnt_off000084d8.bin
e3dc30cd69473f08b9483bb660e9aeaccc8f6f74c3e4f353697525059d592d8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84D8 17720 bytes

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