Malicious PDF — malware analysis report

Static analysis result for SHA-256 95a56efee4b47a6e…

MALICIOUS

PDF

43.6 KB Created: 2021-05-15 08:38:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6fd3d1aefee5792eaf00f5cb9c6d44a4 SHA-1: a4dbc5595aefd5f97fce2f7f2c1983be8d3ddc90 SHA-256: 95a56efee4b47a6e249e0fb2287d02f7b2f466a1c51e524e3e42c4f85e211714
182 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA and password-protected archive lure, common tactics for tricking users into downloading malicious content. It contains a large number of external links, many of which are SEO-optimized PDF links, suggesting a link farm designed to redirect users to potentially malicious sites. The primary URL, https://netcdn.xyz/app/431946152/free-robux-generator-game-hack, is likely the initial destination for the user's interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 6

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/free-robux-generator-game-hack
    • https://datavoiz.com/images/coin-master-hack-game-download-ios_GM406889139.pdf
    • https://datavoiz.com/images/get-robux-for-free-2021_GM431946152.pdf
    • https://datavoiz.com/images/free-coin-master-spins-blogger_GM406889139.pdf
    • https://datavoiz.com/images/robloxfun-com-robux_GM431946152.pdf
    • https://datavoiz.com/images/free-coins-and-spins-coin-master_GM406889139.pdf
    • https://datavoiz.com/images/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdf
    • https://datavoiz.com/images/coin-master-daily-free-spins-and-coins-link_GM406889139.pdf
    • https://datavoiz.com/images/google-how-do-you-get-free-robux_GM431946152.pdf
    • https://datavoiz.com/images/free-roblox-accounts-2021-with-robux_GM431946152.pdf
    • https://datavoiz.com/images/roblox-com-free-robux_GM431946152.pdf
    • https://datavoiz.com/images/free-coinmaster-spins_GM406889139.pdf
    • https://datavoiz.com/images/coin-master-free-spins-hack-no-human-verification_GM406889139.pdf
    • https://datavoiz.com/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdf
    • https://datavoiz.com/images/roblox-generator-no-verification_GM431946152.pdf
    • https://datavoiz.com/images/can-you-get-minecraft-windows-10-for-free_GM479516143.pdf
    • https://datavoiz.com/images/minecraft-free-play-now_GM479516143.pdf
    • https://datavoiz.com/images/show-me-how-to-get-free-robux_GM431946152.pdf
    • https://datavoiz.com/images/how-do-you-get-free-roblox_GM431946152.pdf
    • https://datavoiz.com/images/coin-master-hack-tool-v1-9-pc_GM406889139.pdf
    • https://datavoiz.com/images/coin-master-hack-spins-ios_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043d4.bin
44a2c0dfe1a8b20c0de5fca7943ea50e51d60c959dbb47e14366b6b1c4ec257a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43D4 24912 bytes
font_01_sfnt_off00007d42.bin
eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D42 2940 bytes
font_02_sfnt_off00008752.bin
10e3e3d4c68cd560ea953d22ca565409121c707f4baa42eec19ee19970d6ace4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8752 18344 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.