Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef053920c6c2d6d…

MALICIOUS

PDF

51.5 KB Created: 2021-06-09 11:16:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 058d7f1d67103d11d86836f8f6bdd520 SHA-1: 7a0e8b1c32450bccde3d09ad3d06cf8e84175db3 SHA-256: bef053920c6c2d6dbfe9c7ffc4f03656e9f191fc3e800c841ead4c487eb7317b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The primary lure is a link to 'Elysian Roblox Hack Download'. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9327

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.tw/app/431946152/elysian-roblox-hack-download-game-hack In PDF document text
    • http://medinup.pt/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/hack-para-roblox-mathdrive_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/developer-tool-for-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • http://medinup.pt/images/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fe6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FE6 32440 bytes
SHA-256: d8c31a4596e1084028fbf178b7aee2c7eba6ceeadccb753f59f23dcccbc26d60
font_01_sfnt_off00009761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9761 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000a473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA473 18988 bytes
SHA-256: 1421f0f6462ff41f6d66a72a4e09b5a11b624f9aef988e356154b55fa293673c

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