Malicious PDF — malware analysis report

Static analysis result for SHA-256 c09f4e61c9895264…

MALICIOUS

PDF

43.4 KB Created: 2021-05-15 01:08:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 58d8eef6bb98e4017c9091c547c204ca SHA-1: 523bd35a62126bd4f8adf88b5abeb232a7df21ec SHA-256: c09f4e61c9895264c9ba5ea5a50dc7f50ef0a398241915d5bfca416062fd1e4a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically luring users with promises of free game currency or hacks. The document body and embedded URLs strongly suggest a phishing or malware distribution attempt. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of a malicious payload being delivered.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-master-free-spins-link-today-new-2021-game-hack In PDF document text
    • https://www.europap.cz/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/e-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/can-i-get-minecraft-windows-10-for-free_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_off00004c23.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C23 24692 bytes
SHA-256: 2d3552fe38a8ebb9a106bf7db2797c7b7f935237d9850e1afd27cd6b0ca99199
font_01_sfnt_off0000852e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x852E 18976 bytes
SHA-256: 9ab4b87832590d82aec569b9c8693c2016d5d9151569e528de1ed13ad8a1cb2c

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