Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e24b78da0816f2…

MALICIOUS

PDF

47.5 KB Created: 2021-06-03 18:23:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ec203f4ee7528b79f7275dc847fc1cbe SHA-1: f44eb7d739460ea898c01beff9224861d7918c47 SHA-256: 75e24b78da0816f2772588399063c073fcc913f64f6d85ab78afbe3c8d3819aa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures related to 'game hacks' and 'free generators'. The embedded URL leads to a known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to earning Robux and a URL that aligns with the malicious findings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/431946152/how-do-you-earn-robux-game-hack In PDF document text
    • https://www.wcauk.org/uploads/files/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/coin-master-hack-no-survey-2021_GM406889139.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/roblox40com-robux_GM431946152.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/tiktok-for-free-online_GM835599320.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.wcauk.org/uploads/files/files/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005188.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5188 25524 bytes
SHA-256: 2ce8b690c254fef62f3af1d109bcc314be17b5bb48b8236b06c27d1461eecf15
font_01_sfnt_off00008c46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C46 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off000095e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95E6 18572 bytes
SHA-256: e3c39348616a862d1a4c3c977e1db6a410321f9044090df5d7e5825d2676aacb

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