Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9a5ba630fb7c8a…

MALICIOUS

PDF

33.5 KB Created: 2021-06-28 06:10:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1d8c651b9ac936f60bb9bf1021351c72 SHA-1: 7ba30ee4bb0cdcf415c5076b37edca14372c5648 SHA-256: 5e9a5ba630fb7c8ad34d1253510aae3c1f6a619f08a2d310d9bc921ab9b8cfb9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, using themes of game hacks and free currency to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/roblox-cheating-youtube-game-hack, is identified as a malicious redirector. The document's structure and embedded URLs suggest an attempt to lead the user to a site that likely hosts further malicious content or exploits.

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-cheating-youtube-game-hack In PDF document text
    • https://www.knjigebuducnosti.com/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/how-to-get-free-robux-without-password-2021_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/robloxnation-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/ccv3-roblox-cheats-2021_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/exploit-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/roblox-robux-page_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_off00002c42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C42 22128 bytes
SHA-256: 520c5462f0e3d389617fcff272d7eb8ddf4e7d60265d7239352e4017928aa121
font_01_sfnt_off00005d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D54 19180 bytes
SHA-256: 2c49b7ab193c45c027c4cd9f64ee7693e56fe42930ed4f65fd102b6eb41e5620

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