Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f0fc4c3dc072123…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 05:44:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bee9323c246611add1fd6deb94b3b39f SHA-1: ae98995b7a14fb6dd2fe4b92d714add2c9d95eb2 SHA-256: 4f0fc4c3dc07212337887c5e115d902b500e49247aea0854749bd6f252dec26e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector at http://netcdn.co/app/431946152/draw-free-roblox-avatar-game-hack. Heuristics indicate that the PDF is designed as a lure for game hacks or generators, likely leading users to malicious content or further downloads. No scripts were extracted, but the embedded URLs and redirector behavior strongly suggest a malicious intent to compromise the user.

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/draw-free-roblox-avatar-game-hack In PDF document text
    • https://tena-g.hr/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.tena-g.hr/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/csgo-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/roblox-free-items_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-cheats-for-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/http-wwwrobux-hack_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/hack-into-roblox_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_off0000307e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307E 22728 bytes
SHA-256: 5bd03967a5384037784be97ae0d6a17e2c735cba2e50ae837af92f74b16cd9db
font_01_sfnt_off00006315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6315 19200 bytes
SHA-256: 310e3444fe54bbc8d99d81b20673def78325a03a62c1a335245cb4c7c188a725

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