Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb965f60efe82b97…

MALICIOUS

PDF

38.2 KB Created: 2021-04-22 14:52:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 2f1b1a660667e439bed01e7cb5fe192e SHA-1: a03dc76dfab1b64f2969a2483602bf211a2dbfb0 SHA-256: eb965f60efe82b9772ad5457b5fb574d3cc93c4166ad237c7cc7e0884755b4a7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure related to 'free Roebucks' for the game Roblox, directing users to a suspicious URL. Heuristics indicate this is a game hack redirect lure, and the ML classifier strongly flagged the PDF as malicious. While no scripts were extracted, the document's content and linked URLs suggest a phishing or scam attempt designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9280

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.pro/app/431946152/how-to-get-free-roebucks-in-roblox-2021-game-hack PDF link annotation
    • http://facingachild.org/images/roblox-booga-booga-fly-hack-may-26-2021.pdfIn PDF document text
    • http://facingachild.org/images/free-shaggy-old-roblox.pdfIn PDF document text
    • http://facingachild.org/images/free-cinema-4d-lightroom-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_off0000379b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x379B 25316 bytes
SHA-256: 71760bc905425a5f09ba0cea68a03f34b71fe9d95ecb740b3e7a5dffdd0c17c0
font_01_sfnt_off000071d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D8 18928 bytes
SHA-256: f3b53fc2e42083ce55f4316437c8fda529c76617667802de2f0c2a5bf94feedb

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