Malicious PDF — malware analysis report

Static analysis result for SHA-256 76965223b2f178b2…

MALICIOUS

PDF

35.1 KB Created: 2021-06-26 18:01:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 25fcae52564d118bf741cb22df9d8c45 SHA-1: c8d61fe7df10828dc8a56f32d5eea26e568d8ebb SHA-256: 76965223b2f178b2c02aa32a072430152e3374e23d9bea7c25ae54a3c498b6d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically advertising 'game hacks' and 'generators' for popular games. The primary lure URL is http://netcdn.co/app/431946152/roblox-free-blue-hair-game-hack, which is flagged as malicious. The document's structure and embedded URLs suggest it is designed to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery.

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/roblox-free-blue-hair-game-hack In PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/roblox-obby-cheats_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/robux-generator_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/the-most-hacked-game-in-roblox_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/roblox-hack-client-2021-download_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/roblox-www-com_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/more-robux_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/tiktok-viewer-free_GM835599320.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000309d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309D 23084 bytes
SHA-256: fde142263c8aacd38157270a24afd4d2bbb24f2b874fbdbf0c7515e767ce2bca
font_01_sfnt_off000064e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E0 18912 bytes
SHA-256: 05ebd6e0d3079081143485a1ec3884d2d0e585a3e4e13255471624d5c70be053

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