Malicious PDF — malware analysis report

Static analysis result for SHA-256 db7e8fb2178f2787…

MALICIOUS

PDF

47.1 KB Created: 2021-06-13 19:47:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d8497d95e380d35e99c7a1fffc356725 SHA-1: 632a311be94ec72b7836591c0afce28cf0ff2603 SHA-256: db7e8fb2178f2787000186451055ffb1fa7a1ae722063204173bb6a00df17372
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple URLs pointing to external resources, likely intended to host malicious payloads. The presence of a 'download button' heuristic and a lure for password-protected archives suggests a phishing or social engineering attempt to trick users into downloading malware. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • 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 http://netcdn.co/app/431946152/hacking-clients-for-roblox-game-hack
    • http://suaedy-library.net/repository/free-robux-stream_GM431946152.pdf
    • http://suaedy-library.net/repository/moonactive-coin-master-free-spins-link_GM406889139.pdf
    • http://suaedy-library.net/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • http://suaedy-library.net/repository/coin-master-cheats-2021_GM406889139.pdf
    • http://suaedy-library.net/repository/free-spins-for-coin-master_GM406889139.pdf
    • http://suaedy-library.net/repository/robux-hack-facile_GM431946152.pdf
    • http://suaedy-library.net/repository/download-coin-master-hack_GM406889139.pdf
    • http://suaedy-library.net/repository/coin-master-connection-lost-hack_GM406889139.pdf
    • http://suaedy-library.net/repository/roblox-skin-free_GM431946152.pdf
    • http://suaedy-library.net/repository/free-roblox-clothes-boy_GM431946152.pdf
    • http://suaedy-library.net/repository/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdf
    • http://suaedy-library.net/repository/minecraft-pocket-edition-hack_GM479516143.pdf
    • http://suaedy-library.net/repository/freer-tiktok_GM835599320.pdf
    • http://suaedy-library.net/repository/online-coin-master-hack-here_GM406889139.pdf
    • http://suaedy-library.net/repository/free-coin-master-links_GM406889139.pdf
    • http://suaedy-library.net/repository/how-to-get-free-coins-for-coin-master_GM406889139.pdf
    • http://suaedy-library.net/repository/is-there-any-way-to-get-free-robux_GM431946152.pdf
    • http://suaedy-library.net/repository/coin-master-coins-free_GM406889139.pdf
    • http://suaedy-library.net/repository/how-to-make-free-robux_GM431946152.pdf
    • http://suaedy-library.net/repository/how-to-get-free-robux-no-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c0a.bin
6f84c6233a266ca731757f7086a13c933089edcba72b1f63d28afa640b95d6bd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C0A 27380 bytes
font_01_sfnt_off00008a6f.bin
94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A6F 2824 bytes
font_02_sfnt_off0000941e.bin
5e938e7c8986ac825ee100e077c98781a132191f04fe80101ec165084e9feb73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x941E 18860 bytes

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