Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0bfaf96fb94f8b…

MALICIOUS

PDF

40.8 KB Created: 2021-05-11 20:33:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2dd9c922d5fdec250f0e736132a6b7da SHA-1: bea39b2934f99c836abe2dc30028ba69030e06bc SHA-256: 6f0bfaf96fb94f8bdb2c52e05e7f4d0454962132079798ae6ab6460ca3c4ac35
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 links, suggesting a link farm designed to drive traffic. The document body and extracted URLs indicate a lure for game hacks and cheats, such as for Coin Master and Roblox. The presence of embedded URLs and the ML classifier's high confidence score strongly suggest malicious intent, likely to redirect users to phishing or malware download sites.

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/hack-coin-master-no-survey-game-hack
    • http://rainbowbuddha.academy/images/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • http://rainbowbuddha.academy/images/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://rainbowbuddha.academy/images/games-like-minecraft-but-free_GM479516143.pdf
    • http://rainbowbuddha.academy/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdf
    • http://rainbowbuddha.academy/images/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdf
    • http://rainbowbuddha.academy/images/free-coin-spin-daily-link-net_GM406889139.pdf
    • http://rainbowbuddha.academy/images/coin-master-heaven_GM406889139.pdf
    • http://rainbowbuddha.academy/images/free-robux-2021-no-verification_GM431946152.pdf
    • http://rainbowbuddha.academy/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdf
    • http://rainbowbuddha.academy/images/free-coins-for-planet-master-game_GM406889139.pdf
    • http://rainbowbuddha.academy/images/coin-master-free-coins-link-2021_GM406889139.pdf
    • http://rainbowbuddha.academy/images/coin-master-hacks-and-cheats_GM406889139.pdf
    • http://rainbowbuddha.academy/images/roblox-land-free-robux_GM431946152.pdf
    • http://rainbowbuddha.academy/images/get-free-spins-coin-master-2021_GM406889139.pdf
    • http://rainbowbuddha.academy/images/free-robux-no-downloading-apps_GM431946152.pdf
    • http://rainbowbuddha.academy/images/coin-master-fan-page-facebook_GM406889139.pdf
    • http://rainbowbuddha.academy/images/minecraft-hacks-pc_GM479516143.pdf
    • http://rainbowbuddha.academy/images/get-gold-coin-master-village-hack_GM406889139.pdf
    • http://rainbowbuddha.academy/images/roblox-hack-me_GM431946152.pdf
    • http://rainbowbuddha.academy/images/free-robux-giveaway-live_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046fa.bin
eda7e517d94d2dd9dc1e3cff508d13e9ee9a0b162ac295d89cbf14d8b87020ca		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46FA 23860 bytes
font_01_sfnt_off00007d3b.bin
e84df6580521eb153faf73f2cf2f63c6185ac0436430677c3eaeca27c8c111a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D3B 18148 bytes

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