Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f90c26d5ad9c561…

MALICIOUS

PDF

41.4 KB Created: 2021-04-30 19:30:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2b9753663732f07c95710bddba7165ce SHA-1: 144d95fa28cdc5b348bcf4379451778f7a104f66 SHA-256: 9f90c26d5ad9c561f03f72801d2d3c093009395675fc65a1961caa9fddf8f4d3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure related to 'free game hacks' for Roblox, directing users to a suspicious URL. This suggests a phishing or scam attempt designed to lead users to potentially malicious content or downloads. While no scripts were directly executed, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to harmful sites.

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/roblox-players-for-free-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/roblox-screen-recorder-free.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/button-clicker-for-free-robux.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hacken-in-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hack-roblox-with-crashing.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/cool-free-hats-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-trades-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-roblox-injectors-list.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-one-piece-ocean-voyage-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-critical-strike-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-tix-factory-tycoon-packet-tix-hack.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_off00004505.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4505 25152 bytes
SHA-256: 269a96e3d7132730f416588aab93172dc49c48e207978fc9bee910ddf85469c5
font_01_sfnt_off00007f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4A 18512 bytes
SHA-256: 2a650fd90a0a064b41dccfda2272f4a8bddfc5aed75d9539e183c953315f4f08