Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfbbff5b4bb29233…

MALICIOUS

PDF

35.3 KB Created: 2021-07-01 00:30:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c36b188935ee13128793269ae145996e SHA-1: ac2d8b919d3c8b6587018ea25b9303904005aa45 SHA-256: cfbbff5b4bb292339f1d260163cb4c8d44527a3e0709101eafe4ebaca89d5f70
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to entice users. It contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/free-robux-by-robuxian-game-hack. The document body and embedded URLs suggest a phishing or scam attempt aimed at users seeking in-game advantages. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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 http://netcdn.co/app/431946152/free-robux-by-robuxian-game-hack In PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/roblox-shard-seekers-cheat_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/best-ways-to-make-robux-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/roblox-jailbreak-noclip-hack_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/roblox-hackclub-2021_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/free-robux-hack-no-inspect-and-element_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/how-to-install-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://www.arabianlasdiamond.com/uploaded_files/userfiles/files/bandit-roblox-exploiter-for-free_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
font_00_sfnt_off0000331a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x331A 22448 bytes
SHA-256: 868057853d4a7a445266e381e6cb6f72bc33a3e4e152516b96b4815af99cfaf0
font_01_sfnt_off00006532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6532 19016 bytes
SHA-256: efb49514e82f4793a9ff299c885132947e82649e2c9fe1ac030a06993fb15df7

Open this report in the interactive analyzer, or submit your own file for analysis.