Malicious PDF — malware analysis report

Static analysis result for SHA-256 782453b748f568e5…

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 16:12:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 7cf228cb57f8b16d29a96ce22d5fce4d SHA-1: 6e3f069f0c838376a74db024eee465f3fa8998a4 SHA-256: 782453b748f568e544273db23c9c83cc54242bd920a65a9ad1b58a5844b036b9
260 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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-free-members-game-hack In PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-accounts-with-obc-list_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-yin-vs-yang-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-donation_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/flame-gg-free-robux-https-flame-gg-zeph_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/inquisitormaster-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-make-a-skin-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-how-to-hack-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/play-this-game-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-cheats-for-tickets-and-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-no-survey-no-download-no-verification-2021_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_off00002fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE6 21812 bytes
SHA-256: 0f7f3ec6fec45093f7310b894df48f38deddeda4971a75d85cfe449b0fcd7dce
font_01_sfnt_off0000602a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602A 19108 bytes
SHA-256: d74632cb71ab53372f8027fbef0f7d35f26729244c13334da65d2cebae0adc27

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