Malicious PDF — malware analysis report

Static analysis result for SHA-256 53a86010589a789b…

MALICIOUS

PDF

33.8 KB Created: 2021-06-28 18:26:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2426495b800753166a5b1866ba824974 SHA-1: d4084ebf5b2dc301e7cdf446de5d29197066038c SHA-256: 53a86010589a789b9df612522d9eb46294008966f2f4035bdfa3c8a194ef8124
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, including one to a known malicious redirector, masquerading as game hacks and free currency generators. The primary malicious link is http://netcdn.co/app/431946152/pseint-exist-hack-roblox-lvl-6-game-hack, which likely serves as a gateway to further malicious content or phishing pages. The document's content and embedded URLs strongly suggest a social engineering lure to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/pseint-exist-hack-roblox-lvl-6-game-hack In PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-roblox-accounts-with-bc-list_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-to-hack-unlimited-money-in-ultimate-driving-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-to-get-hacks-that-offect-other-players-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/beyond-roblox-speed-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-pin-code-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-jailbreak-noclip-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/camisetas-de-hacker-para-crear-en-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/paginas-para-descargar-hacks-de-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-robux-no-inspect-no-info_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/citizen-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-to-be-a-vip-on-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/csgo-hacker-id-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/hacks-for-roblox-how-to-fix-them_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-roblox-accounts-with-good-quirks_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/fps-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-script-hack_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_off00002b86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B86 22616 bytes
SHA-256: 4a532e6140058ab0dc4de2f04a23e963523896172293a09aef702d579f4e7624
font_01_sfnt_off00005e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E44 19316 bytes
SHA-256: aa32a7652978c1fa27acb4ba668f97a2f1a804f2ad8c448e19ca3f500c6d3872

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