Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8b59e5e6f9e64a6…

MALICIOUS

PDF

36.6 KB Created: 2021-05-24 02:24:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7ad87824cd3924ef388d29e8df917da7 SHA-1: 62ce951a7aaeaaab8111f153442fa5a22c120d83 SHA-256: d8b59e5e6f9e64a6412788ea73acce27d654cb191edc10137e622dfd4c7a4e04
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains, specifically advertising 'free Robux' or 'game hacks' to entice users. One of the primary links, 'https://netcdn.xyz/app/431946152/free-robux-giveaway-game-hack', is identified as a malicious redirector. The document body also contains a call-to-action phrase, reinforcing the lure. While no scripts were explicitly extracted, the nature of the links suggests a potential download or redirection to a malicious site, likely involving JavaScript execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/free-robux-giveaway-game-hack In PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/20210-robux_GM431946152.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/coin-master-free-spins-link-no-verification_GM406889139.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_off0000333d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x333D 24936 bytes
SHA-256: cbb55540eae75d7601f65b6e9231d9390fbe60911cef16ae4b5d394e7fa063d1
font_01_sfnt_off00006c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C35 18820 bytes
SHA-256: a907981f6338d23acda294c558170907db38f399f16fdb2ca0bc536a0b707f6d

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