Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d5af1dbd8bcfa6…

MALICIOUS

PDF

42.9 KB Created: 2021-05-12 20:40:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-27
MD5: 1fe7f88f564d6f4305eefe7bc3637ef9 SHA-1: 9604c6664afef2c6eacc03d7a409834e78735253 SHA-256: c5d5af1dbd8bcfa69d657306b74c451b0d651295b1e1cceeeee92ccd288e6dd5
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/how-to-hack-roblox-passwords-game-hack In PDF document text
    • https://ombalicargo.com/new/public/ckfinder/userfiles/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://ombalicargo.com/new/public/ckfinder/userfiles/files/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ombalicargo.com/new/public/ckfinder/userfiles/files/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://ombalicargo.com/new/public/ckfinder/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://ombalicargo.com/new/public/ckfinder/userfiles/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://ombalicargo.com/new/public/ckfinder/userfiles/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://ombalicargo.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://ombalicargo.com/new/public/ckfinder/userfiles/files/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://ombalicargo.com/new/public/ckfinder/userfiles/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://ombalicargo.com/new/public/ckfinder/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/free-roblox-codes_GM431946152.pdfIn PDF document text
    • https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/link-for-free-spins-on-coin-master_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
stream_003_off0000495d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x495D 26108 bytes
SHA-256: 2d45fbdffb776a9e1283648b89cf847c91558f5b71d4ba963fdb43d395ba1d1d
font_01_sfnt_off000083ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CE 18672 bytes
SHA-256: bdba0893d178c93f7db8dfb8e75fc125deebdc91658f3b2576607bd83519404f

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