Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd7beb3d9cb255eb…

MALICIOUS

PDF

43.7 KB Created: 2021-05-17 19:31:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cf8822d5a05297c76c0f5d7654a9f50f SHA-1: a341cd00477ed419064a08a68e970280b8796eb3 SHA-256: fd7beb3d9cb255eb1f916785c8bd1b35479d35e8dacd2a7ecb28cf019e924c81
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 disguised as downloadable PDFs related to game hacks and free virtual currency. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document body, though partially corrupted, contains references to "Free Robux" and "game hack", reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/funblox.xyz-free-robux-game-hack
    • http://agroturismoarkaia.com/images/free-spins-on-coin-master-game_GM406889139.pdf
    • http://agroturismoarkaia.com/images/free-robux-no-verification-2021-android_GM431946152.pdf
    • http://agroturismoarkaia.com/images/coin-master-hack-https-coinms-net_GM406889139.pdf
    • http://agroturismoarkaia.com/images/coin-free-master_GM406889139.pdf
    • http://agroturismoarkaia.com/images/coin-master-heaven-free-spins-today_GM406889139.pdf
    • http://agroturismoarkaia.com/images/free-robux-no-apps_GM431946152.pdf
    • http://agroturismoarkaia.com/images/how-to-get-free-spins-in-coin-master_GM406889139.pdf
    • http://agroturismoarkaia.com/images/free-robux-websites-that-actually-work_GM431946152.pdf
    • http://agroturismoarkaia.com/images/how-to-get-minecraft-for-free-on-computer_GM479516143.pdf
    • http://agroturismoarkaia.com/images/twitter-coin-master-free-spins_GM406889139.pdf
    • http://agroturismoarkaia.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdf
    • http://agroturismoarkaia.com/images/coin-master-village-4_GM406889139.pdf
    • http://agroturismoarkaia.com/images/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdf
    • http://agroturismoarkaia.com/images/coin-master-spin-link-today-free_GM406889139.pdf
    • http://agroturismoarkaia.com/images/robux-free-c_GM431946152.pdf
    • http://agroturismoarkaia.com/images/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdf
    • http://agroturismoarkaia.com/images/coin-master-spin-rewards_GM406889139.pdf
    • http://agroturismoarkaia.com/images/free-robux-gift-card-codes-2021_GM431946152.pdf
    • http://agroturismoarkaia.com/images/how-to-hack-coin-master-pc_GM406889139.pdf
    • http://agroturismoarkaia.com/images/how-to-get-free-robux-com_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bdb.bin
69656fb02eb23ea0084e6c4216f3bc6cecd741c9278e00a2cbd809fffaec7a94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BDB 26976 bytes
font_01_sfnt_off00008828.bin
094e3ad3acb05c69538296255af77c281e929786c4e47907665e7e86d1bfa11c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8828 18416 bytes

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