Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec7e4db9ced757b8…

MALICIOUS

PDF

56.1 KB Created: 2021-05-19 15:03:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 20555fd1ec5785b07c87ce260ddb93b1 SHA-1: 83d4c97a5fbedd31395c4644d819907844ba0dd5 SHA-256: ec7e4db9ced757b8a6be28664aeec814bd6965778fd5856d36784674f5af5f77
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a game hack generator, which is a common lure for malicious downloads. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the embedded URLs suggest the document is intended to redirect users to sites hosting further malicious content, likely a downloader or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8193

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/406889139/coin-master-hack-unlimited-spins-game-download-game-hack PDF link annotation
    • http://eurosystemssrl.it/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://eurosystemssrl.it/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/fb-coin-master_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-hax_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/generator-robux_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004db7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DB7 26408 bytes
SHA-256: 6dac733b9924433f8ed9367bcd562463a29ba34d29fdc02560cb11c68deec0b8
font_01_sfnt_off00008a8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8F 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off0000955a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x955A 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA880 18916 bytes
SHA-256: bde0eed1bfad508078df2378b9fcc27a2ef02f44c57d1a1bbad0912f0d0a144b
font_04_sfnt_off0000cc76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC76 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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