Malicious PDF — malware analysis report

Static analysis result for SHA-256 98a9476bf5775908…

MALICIOUS

PDF

42.7 KB Created: 2021-04-29 16:20:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 022c8e9e31d5177dc4ffdd58d914b618 SHA-1: 0436bdb9e319fec29ac798fb25214aaa4a379276 SHA-256: 98a9476bf5775908340e1ae58b8b963a0f9d02f7d4c3dcaf84aa823586c6d454
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a "GAME_HACK_REDIRECT_LURE", indicating it links to a "free generator / game hack" website. The document body and embedded links reinforce this, pointing to URLs associated with game hacks and generators. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering attack to redirect users to potentially malicious content.

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/island-royale-roblox-free-game-hack PDF link annotation
    • https://www.malesse.com/ckfinder/userfiles/files/descargar-hack-de-jailbreak-roblox.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/descargar-roblox-hackeado-para-pc.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/robux-hack-no-survey-no-download.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/robux-hack-no-human-verification-2021.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/free-robux-generator-no-human-verification-or-password.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/free-tkay-the-race-roblox-id.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/how-to-make-free-admin-game-roblox.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/roblox-how-to-get-free-hats.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-free-robux-hack-2021.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000041a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41A1 29464 bytes
SHA-256: ce8706a21089eb527f7d7e556528799390c48075625c2759f5124f8977411ca2
font_01_sfnt_off0000847e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x847E 18532 bytes
SHA-256: eb1ddd6762148fd8dc10d2472b0a88be55167e8eab47bbfb32ddc5f3e6f2902a

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