Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cce12f8a007a4b8…

MALICIOUS

PDF

34.5 KB Created: 2021-07-01 17:20:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 005895a24c976e9e9cb909a4151614c3 SHA-1: d3735684dfd6f799b0037dda8ab459e3de906d6a SHA-256: 1cce12f8a007a4b8cff784686f6bab2693964f359792706e3ee90a4fb6629e48
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to external resources, many of which are SEO-optimized to appear as legitimate guides for obtaining free in-game currency or hacks for popular games like Roblox and Coin Master. The primary URL, http://netcdn.co/app/431946152/roblox-hack-redboy-game-hack, suggests the download of a malicious application disguised as a game hack. The presence of a "download button" heuristic further supports the malicious intent of luring users to download potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-hack-redboy-game-hack
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/legit-free-spins-coin-master_GM406889139.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/blogspot-coin-master-free-spins_GM406889139.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/coin-master-links-to-free-spins_GM406889139.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/i-cant-get-free-spins-coin-master_GM406889139.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/i-want-free-robux_GM431946152.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/moonactive-coin-master-free-spins_GM406889139.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/hack-coin-master-free-spins_GM406889139.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/games-that-give-free-robux_GM431946152.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/no-human-verification_GM431946152.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/coin-master-free-stuff-links_GM406889139.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/free-robux-youtube_GM431946152.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-link_GM406889139.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/free-robux-earn_GM431946152.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/coin-master-100-free-spins-link_GM406889139.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/free-robux-real-2021_GM431946152.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/websites-that-give-you-free-robux_GM431946152.pdf
    • https://elearning.min6blitar.sch.id/__statics/gudangsoal/files/androeed-ru-minecraft_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fa4.bin
651cfed5ff246c6cd8c433d95eb6ddfa2f5d0c232e0cae8a7b1550fad2405193		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA4 22560 bytes
font_01_sfnt_off000061d3.bin
43efa7d102f4fda29be216f43963d338d3369eee6200e8c2f6a405d8039b8a59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D3 19012 bytes

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