Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8f9e74bd235ee0c…

MALICIOUS

PDF

34.1 KB Created: 2021-06-18 18:06:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 10286285a578218bbfd2da78397222e5 SHA-1: 30bebf37c4388cdc8cc815013ab0af4b7f7b4e1a SHA-256: c8f9e74bd235ee0ccb0bd193852336c2dcf2ea5d7ab2931f44118b0de0ade0cf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game items and hacks to entice users. It contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/free-roblox-clothes-site-game-hack. The document's structure and embedded URLs suggest it is designed to lead users to potentially malicious websites for further exploitation or 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/free-roblox-clothes-site-game-hack In PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/pubg-uc-carding-quora_GM1330123889.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/best-hacked-client_GM479516143.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-clothing-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/roblox-hack-2021-free_GM431946152.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins-daily_GM406889139.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_off00002f03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F03 22364 bytes
SHA-256: c452fcb2c60fbc1b952e573743c581ad7531a508e787ce088c53e224b706c1fc
font_01_sfnt_off000060f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F8 18856 bytes
SHA-256: b1010f61565fef6a46ec6d0271cd0ed3f55b2d3bad2b4392c32025c4527da1d1

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