Malicious PDF — malware analysis report

Static analysis result for SHA-256 4252a3d93644929c…

MALICIOUS

PDF

34.1 KB Created: 2021-06-30 20:49:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 8bd79bfff4321aaefb123e0660d7c667 SHA-1: 88ed2c3e9e3a33f09ed31fc3b006a30b0165918c SHA-256: 4252a3d93644929c028b4056780a2a7a1e2f387e40c3a03515ef51827aaff9fc
160 Risk Score

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-skins-free-download-girl-game-hack In PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/mistplay-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/hack-richest-roblox-account-deleted_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-hack-roblox-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-free-robux-fake_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/robux-hack-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-jailbreak-hack-teleport-download_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-give-someone-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-fly-hack-in-roblox-lumber-tycoon_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-downlaod-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-free-robux-insert_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/cheats-to-get-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-download-pc-windows-10-free_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/minecraft-bedrock-hacks_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
font_00_sfnt_off00002f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7C 21640 bytes
SHA-256: 67457974237ca327393556efb15a23a67365d1854d27613ac827e71b8295ecff
font_01_sfnt_off00005eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEC 19444 bytes
SHA-256: 6e7aabaad65b3a036a51ebebca67ce7c77e541c2ec857e8b4f7f618e79bf895b

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