Malicious PDF — malware analysis report

Static analysis result for SHA-256 f66e2c2cda5eb15c…

MALICIOUS

PDF

47.4 KB Created: 2021-06-09 01:33:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 19f396260697edbc3729a6f486db7f0c SHA-1: d0563daf7d53a8e7f79037f5460f77410a12fadb SHA-256: f66e2c2cda5eb15c85e41e30800f0af17a834ab8bf45c9415c69616d0d20fadc
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document contains a lure for 'free Robux' and includes a link to known malicious redirector infrastructure. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document likely instructs the user to execute commands, a common tactic for initial payload delivery. No scripts were extracted, but the embedded URL and lure suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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
  • 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.tw/app/431946152/www.free-robux.com-free-robux-now-game-hack In PDF document text
    • http://ines.co.rs/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/inside-the-world-of-roblox-pdf-free-download_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/hack-roblox-command-prompt_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/free-coins-and-spins-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-hack-2021-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e5f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E5F 26312 bytes
SHA-256: d7074bf68d803beee5b687d9f1ba29eff04de6c8c67145acf364319bf5154b84
font_01_sfnt_off00008b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7F 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00009541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9541 18700 bytes
SHA-256: ae8815d0135944f5c82197798bb2162676740c87401cefb2898058c0145bdca4

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