Malicious PDF — malware analysis report

Static analysis result for SHA-256 08f2130da5362923…

MALICIOUS

PDF

45.0 KB Created: 2021-05-15 04:09:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 891051da0381b8481937fcae329073e8 SHA-1: d1553568368db4fa9482bf599b3e80aed4210ad5 SHA-256: 08f2130da53629238c87ceed6005ee1c8ed2014bbaeab4e2eb5c46b5b0545656
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains and websites that promise 'free Robux' or 'game hacks', a common lure for phishing or malware distribution. The heuristic firings indicate the document is designed to redirect users to potentially malicious content. While no scripts were explicitly extracted, the nature of the lures and the embedded links suggest an attempt to exploit user interest in free in-game currency or cheats to lead them to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/websites-that-give-free-robux-game-hack In PDF document text
    • http://butkimloai.com/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • http://butkimloai.com/images/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/www-robux-redeem_GM431946152.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_off000048db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48DB 29516 bytes
SHA-256: 46b6d82b028e226b31c276849aa18bb627cc507ac6ef85ce5f549134591f1250
font_01_sfnt_off00008b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8C 18944 bytes
SHA-256: 78a0fcf68a5d31112d03f33f6a87e59a8dd4ec5e5d54fb5213929ff381de215f

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