Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ae973d76655f0d9…

MALICIOUS

PDF

43.0 KB Created: 2021-04-24 01:53:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 11c8864fb26fdfc206f2ebacce60f6ca SHA-1: 74bc1c8ca7568f7f434788a4b586c274f33b727c SHA-256: 1ae973d76655f0d9f9fd8807da8547d9d2acddd24ed056cd3e84fa8ae06aca10
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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://netsecure.top/app/431946152/best-free-script-executor-roblox-game-hack PDF link annotation
    • http://blueduna.com/images/how-to-get-free-robux-with-cheat-engine-64.pdfIn PDF document text
    • http://blueduna.com/images/can-you-give-me-robux-for-free.pdfIn PDF document text
    • http://blueduna.com/images/free-robux-now-2021.pdfIn PDF document text
    • http://blueduna.com/images/roblox-free-wolf-tail.pdfIn PDF document text
    • http://blueduna.com/images/free-robux-xyz.pdfIn PDF document text
    • http://blueduna.com/images/roblox-hack-2021-may.pdfIn PDF document text
    • http://blueduna.com/images/hack-hoogon123-on-roblox.pdfIn PDF document text
    • http://blueduna.com/images/free-instant-no-lie-robux.pdfIn PDF document text
    • http://blueduna.com/images/free-shirts-templates-non-copyrighted-roblox.pdfIn PDF document text
    • http://blueduna.com/images/swat-for-free-on-jail-break-roblox.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
font_00_sfnt_off0000405a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x405A 30600 bytes
SHA-256: cd99f8811f836bd43c2043010075b51ddd7a451efdafe8aa0bc198f25d2429d7
font_01_sfnt_off0000861c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x861C 18488 bytes
SHA-256: 4540345197beaca2a0826d0e5f3ab0464fd9c574b262d9285590069a58d70fae

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