Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c5278777d54a12…

MALICIOUS

PDF

41.4 KB Created: 2021-04-29 05:23:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: be07009f8370e0067bf11ff3dbc8abe3 SHA-1: 7604eeab678986af8892030a0452a75a7b091053 SHA-256: f7c5278777d54a12fa43cd8deb95dc9bf83309485af6162875479cdba621bbde
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to 'Money Hack Roblox 2021' and includes a prominent link to a suspicious URL. This suggests the document is designed to trick users into visiting a site that likely hosts malware or phishing content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/431946152/money-hack-roblox-2021-february-game-hack PDF link annotation
    • https://www.malesse.com/ckfinder/userfiles/files/hack-bleach-new-hope-roblox.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/como-hacer-hacks-roblox.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/roblox-edit-money-value-cheat-2021.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/roblox-free-girl-clothes.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/roblox-is-asking-me-to-free-space-help.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/free-robux-no-virus-hax-free.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/roblox-piano-hack.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/free-robux-obby-limited-time-only-2021.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/f3x-tools-hack-roblox.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/free-roblox-accounts-with-robux-list.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000041e3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x41E3 26316 bytes
SHA-256: 18773f5278574ecba263b28bf776092b308f67e3c6b872f9e71efef88bcf45d6
font_01_sfnt_off00007d21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D21 19264 bytes
SHA-256: 26bd3d2d2fbab347ea529376bd6569110d2678afc028a06511fdf65f5f878779

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