Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eda88c8f3c8242c…

MALICIOUS

PDF

40.5 KB Created: 2021-05-12 11:28:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e814ced66eb450e1d7abcfdcba32c308 SHA-1: 39b66004a006685c2906a7cf99cbdbe290aaa3ce SHA-256: 7eda88c8f3c8242c810129c4c5054960063ed2fd2851f36ae22cd9455dcf478d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks'. The presence of embedded URLs and the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic strongly indicate a phishing or scam attempt. While no scripts were explicitly extracted, the nature of the lures suggests a potential for further malicious actions upon user interaction with the links.

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/406889139/free-spin-coin-game-hack In PDF document text
    • https://www.nara.org.uk/uploads/files/files/robux-download_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/clients-minecraft_GM479516143.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/robux-gainer_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/http-blackgamesus-coinmasterhack_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/roblox-hack-com_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
stream_003_off00004666.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4666 24448 bytes
SHA-256: 38f60d2750a029f7b98329c6210ee2d2b8a411e65a8603942705db1d7c978736
font_01_sfnt_off00007e4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4D 17552 bytes
SHA-256: 1253d7eaf8f5164397dbb1e7af89d7368851d27808cb823deec5c99b72de06bf

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