Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfbdf19c6e2f62ea…

MALICIOUS

PDF

33.6 KB Created: 2021-07-25 05:30:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0588011f85e1cac083873e34e28c0b40 SHA-1: 7203140a3f5f1fd0e15bb4dc472adcdee14bd335 SHA-256: bfbdf19c6e2f62ea7059000fa26c652baacdecf707dfdcc8eb6e1916f91c2481
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs and a call-to-action to obtain free Robux, indicating a likely phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. The presence of external URIs and a clickable URI pointing to a raw IP address suggests the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://netcdn.tw/app/431946152/how-to-get-free-robux-easy-2021-game-hack
    • http://118.98.227.172/opac/repository/free-robux-discord_GM431946152.pdf
    • http://118.98.227.172/opac/repository/rbx-free-robux_GM431946152.pdf
    • http://118.98.227.172/opac/repository/minecraft-pe-free-ios_GM479516143.pdf
    • http://118.98.227.172/opac/repository/free-robux-games-that-actually-work-2021_GM431946152.pdf
    • http://118.98.227.172/opac/repository/minecraft-education-edition-free_GM479516143.pdf
    • http://118.98.227.172/opac/repository/minecraft-free-download-unblocked_GM479516143.pdf
    • http://118.98.227.172/opac/repository/free-tiktok-fans-no-verification_GM835599320.pdf
    • http://118.98.227.172/opac/repository/free-coin-master-spins-2021_GM406889139.pdf
    • http://118.98.227.172/opac/repository/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://118.98.227.172/opac/repository/free-robux-cards_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002a93.bin
f61f5fd390db44a6c5aba19d92446aad38189a8853d836457021c65fa633374c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A93 23036 bytes
font_01_sfnt_off00005e3a.bin
9f22d9eedc59cc6147a13ff82aa3768ba2a0c9b9a35b2047936220c7f40e5b3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3A 19276 bytes

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