Malicious PDF — malware analysis report

Static analysis result for SHA-256 67f2ebb29e2d44ab…

MALICIOUS

PDF

46.6 KB Created: 2021-05-14 23:13:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 894e0db582cde6f0629e6fb841a2e1cb SHA-1: da4460d03239bd6a3d8090ac0b6afa5682ab986d SHA-256: 67f2ebb29e2d44ab6bbf0237c24f061d2ac0ac1730c362765e2bb74367d3fa39
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 structured as SEO-optimized PDF files related to game cheats and hacks. The presence of a 'robux-scam-game-hack' URL and the heuristic firing for a 'PDF_SEO_LINK_FARM' strongly suggest a phishing or malware distribution attempt. The document's content and structure indicate it's designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/431946152/robux-scam-game-hack
    • http://rgadventure.com/userfiles/files/minecraft-bedrock-free-with-java_GM479516143.pdf
    • http://rgadventure.com/userfiles/files/free-robux-hack-generator_GM431946152.pdf
    • http://rgadventure.com/userfiles/files/coin-master-free-spins-links-2021_GM406889139.pdf
    • http://rgadventure.com/userfiles/files/114-4-hacks_GM479516143.pdf
    • http://rgadventure.com/userfiles/files/free-spin-link-coin-master_GM406889139.pdf
    • http://rgadventure.com/userfiles/files/free-spins-and-coins-coin-master_GM406889139.pdf
    • http://rgadventure.com/userfiles/files/play-coin-master-online-free_GM406889139.pdf
    • http://rgadventure.com/userfiles/files/how-to-get-free-robux-instantly_GM431946152.pdf
    • http://rgadventure.com/userfiles/files/can-i-play-roblox-for-free_GM431946152.pdf
    • http://rgadventure.com/userfiles/files/minecraft-hacks-list_GM479516143.pdf
    • http://rgadventure.com/userfiles/files/como-descargar-coin-master-hackeado_GM406889139.pdf
    • http://rgadventure.com/userfiles/files/minecraft-pc-free_GM479516143.pdf
    • http://rgadventure.com/userfiles/files/clients-minecraft_GM479516143.pdf
    • http://rgadventure.com/userfiles/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdf
    • http://rgadventure.com/userfiles/files/free-robux-generator-without-verification_GM431946152.pdf
    • http://rgadventure.com/userfiles/files/is-roblox-free-on-xbox_GM431946152.pdf
    • http://rgadventure.com/userfiles/files/minecraft-cracked-client_GM479516143.pdf
    • http://rgadventure.com/userfiles/files/free-coin-master-spins-link-download_GM406889139.pdf
    • http://rgadventure.com/userfiles/files/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdf
    • http://rgadventure.com/userfiles/files/can-you-give-me-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049cf.bin
3bbc23cf374e22f4ac6ee3039d2cb180dff87b80810c8a484b9f8e3fe0762268
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49CF 26144 bytes
font_01_sfnt_off000086df.bin
608f0dd4f6bfb6adbccec84228618ee8e4c9e09226d7330efb5300e499d1567f
pdf-font-stream PDF embedded font (sfnt) at offset 0x86DF 3608 bytes
font_02_sfnt_off00009366.bin
383b1d6f347944e20328288fe5cf1d6e6525012059e3a3c68a0557f2d1f0cd2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9366 18340 bytes