Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a41ebfa64868e47…

MALICIOUS

PDF

47.7 KB Created: 2021-06-08 14:52:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dbe7164c8cfc784e637fe67705b3db26 SHA-1: 8121e717f03f01cedfadc13db3a9c5f66306baa0 SHA-256: 6a41ebfa64868e47c6f1f1dacb94f2b67d78c54f852c268cc84407227f5e6730
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on a "free generator / game hack" which redirects to malicious infrastructure. The primary malicious URL identified is https://netcdn.tw/app/431946152/codes-how-to-get-free-robux-game-hack. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/codes-how-to-get-free-robux-game-hack In PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/increible-hack-de-roblox-que-funciona_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/como-evitar-ser-hackeado-en-roblox_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/free-roblox-gift-cards-pins_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/how-to-hack-on-piano-roblox_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/click-for-free-robux_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/how-to-get-free-2021-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/gget-free-robux_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/free-robux-generator-no-survey-or-verification_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/how-to-hack-roblox-games-no-download_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/catalog-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://oak4x4messinias.gr/wp-content/uploads/fsqm-files/download-minecraft-free-hiapphere_GM479516143.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
stream_004_off0000522f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x522F 31044 bytes
SHA-256: 7d2a71fe9f32040490b01f9fdedaea838ded23b560d53b5dca8e74d51c30a748
font_01_sfnt_off0000977b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x977B 18456 bytes
SHA-256: e7ed60d24a78ba6057de20e743a58d73d760a91b60c41324c250f3bd6f119d62

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