Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd80cb0fed82163…

MALICIOUS

PDF

43.6 KB Created: 2021-05-17 09:22:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-26
MD5: ed93644bbe3b6babb700c48e9f333d05 SHA-1: 360ab44e15cb48371680be7b677a0d8eff36d4a8 SHA-256: 3dd80cb0fed8216395e586071a5af97005daf8f27017212e4a45f88e3f111fbc
240 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.
  • 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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/get-roebucks-com-game-hack In PDF document text
    • http://umksn.pl/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://umksn.pl/images/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://umksn.pl/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://umksn.pl/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://umksn.pl/images/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://umksn.pl/images/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://umksn.pl/images/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://umksn.pl/images/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • http://umksn.pl/images/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://umksn.pl/images/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://umksn.pl/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://umksn.pl/images/level-coin_GM406889139.pdfIn PDF document text
    • http://umksn.pl/images/free-coin-spin_GM406889139.pdfIn PDF document text
    • http://umksn.pl/images/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://umksn.pl/images/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://umksn.pl/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://umksn.pl/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://umksn.pl/images/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://umksn.pl/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://umksn.pl/images/free-minecraft-codes-2021_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
stream_003_off0000483e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x483E 27728 bytes
SHA-256: 684a6e86871124aeeebca6fb82400c51181304bdb5352653a068a4542d6227cc
font_01_sfnt_off0000888f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888F 18176 bytes
SHA-256: 3feb4b55ad413b01c50222b098b30203e8d0144688a9505172aed515734aa487