Malicious PDF — malware analysis report

Static analysis result for SHA-256 86120ea29b8989d6…

MALICIOUS

PDF

35.4 KB Created: 2021-06-27 04:25:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 93748bb49566646bdcb956a1564027de SHA-1: 546bb716413a829adb74a8023aaffdbd207bf366 SHA-256: 86120ea29b8989d66885aee7031e20e0ed2c35ebcb4520a5724a7cbcbba9fba7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded links and a prominent call-to-action, directing users to a URL associated with malicious redirector infrastructure. The document body text and heuristic firings indicate a lure for 'free generator / game hack' content, likely a phishing or malware distribution attempt. 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-money-codes-on-roblox-skywars-game-hack In PDF document text
    • https://www.vista-design.hr/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/roblox-cp_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/roblox-synapse-strucid-2021-august-hack_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/coin-master-bonus_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/cheats-in-roblox-games_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/free-robux-promotion-codes_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/roblox-speed-hack-download-2021_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_off00003115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3115 22652 bytes
SHA-256: 0cafb84ccf1363ea809a14fee47f3365579e841a1cabe54b2e2f3cbe02ac4b3c
font_01_sfnt_off000063b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B3 19532 bytes
SHA-256: 2f39999449e397d6048b4300b9667be31077c748202e4300105ec7613ac03bdc

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