Malicious PDF — malware analysis report

Static analysis result for SHA-256 25869e966e304af1…

MALICIOUS

PDF

41.6 KB Created: 2021-04-27 02:36:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f4cb078bd75e65d0a7e0c90665a5bfae SHA-1: 884efb83d0f630ced9e5eaf973960e024cf2b3bf SHA-256: 25869e966e304af1df1cd5c82e649a88d23159bdb793957149c45f0f0eb33cc5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic indicating it links to a 'free generator / game hack' redirector, specifically pointing to a URL associated with game hacking lures. While no scripts were extracted, the document body and embedded URLs suggest a social engineering tactic to trick users into visiting malicious websites. The primary IOC is the redirector URL, which likely serves as a gateway to further malicious content or downloads.

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/hacker-typer-roblox-game-hack PDF link annotation
    • http://www.hawler.in/images/roblox-robot-animation-free.pdfIn PDF document text
    • http://www.hawler.in/images/how-to-change-roblox-username-for-free-2021.pdfIn PDF document text
    • http://www.hawler.in/images/i-got-hack-by-melvin-roblox.pdfIn PDF document text
    • http://www.hawler.in/images/how-to-get-robux-for-free-2021-easy.pdfIn PDF document text
    • http://www.hawler.in/images/free-builders-club-code-roblox.pdfIn PDF document text
    • http://www.hawler.in/images/como-hackear-roblox-para-tener-robux-gratis.pdfIn PDF document text
    • http://www.hawler.in/images/bloxburg-free-roblox.pdfIn PDF document text
    • http://www.hawler.in/images/roblox-coloring-pages-printable-free.pdfIn PDF document text
    • http://www.hawler.in/images/roblox-how-to-get-shirts-for-free.pdfIn PDF document text
    • http://www.hawler.in/images/free-robux-and-tix-generator-no-survey-no-download.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_off00004090.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4090 27664 bytes
SHA-256: 10e019d31078cd4c463c1fa7db7ebfe8b1124887845f75fac3e00b68b727be19
font_01_sfnt_off00007ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF5 18540 bytes
SHA-256: 3395aa0c55174b40842ddc692f07346b40a405b3af5e6f900759cc70f2ff9288

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