Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ba1960ef3fb655e…

MALICIOUS

PDF

42.3 KB Created: 2021-05-17 08:32:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 76f7a49a45901d2d8e18dee45aafbbd9 SHA-1: 89ad252bebd70a953548bc923a1510dd238c4b9f SHA-256: 6ba1960ef3fb655e5e565b9df8c93c4cf03e8846c56f850038a0fa8e0c49beda
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on a domain associated with a link farm. These links lead to pages offering game hacks and cheats, suggesting a lure to download potentially malicious content. The ML classifier strongly indicated maliciousness, and the presence of a download button heuristic further supports this. No scripts were extracted, but the overall structure points to 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/479516143/minecraft-free-trial-game-hack
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/roblox-got-talent-piano-hack_GM431946152.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-game_GM406889139.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/install-free-game-coin-master_GM406889139.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/blox-world-free-robux_GM431946152.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/free-robux-app_GM431946152.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/how-to-hack-and-get-free-robux_GM431946152.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/legit-free-spins-coin-master_GM406889139.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/coin-master-hack-activegamer_GM406889139.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/codes-to-get-free-robux_GM431946152.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/free-spins-coins-coin-master_GM406889139.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/descargar-coin-master-hackeado_GM406889139.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/no-human-verification_GM431946152.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-generator-without-human-verification_GM406889139.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-apk_GM406889139.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/google-moon-active_GM406889139.pdf
    • http://elearning.mtsn1sintang.sch.id/__statics/gudangsoal/files/games-on-roblox-that-give-you-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_off00004ddf.bin
cf694f848388ca552e540726ac70f9caeab61d2110fdc22f613d60fdb93db7b6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DDF 24436 bytes
font_01_sfnt_off00008508.bin
eaa999d9fcd0e41c3411a6787ff304b3b9a642a81f97c4ae06503d53e3265cce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8508 17644 bytes

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