Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3cdca2374d1d15e…

MALICIOUS

PDF

33.6 KB Created: 2021-07-08 01:10:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: db4e7bc4c2e8fbe81c658af7e9d03424 SHA-1: 2b7bc95ad9993a87a63768dbd64d86dd875aad4a SHA-256: e3cdca2374d1d15e8a077f80c4db0d1cc8a99cf5bc46b61977b4c123bcf6aeb5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'free generators' for popular games like Coin Master and Roblox. These links ultimately lead to infrastructure designed to deliver further malicious content or exploit user trust. The presence of embedded URLs and the ML classifier's high confidence score indicate a deliberate malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coinmaster-game-hack In PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-roblox-hacks-2021-no-dll_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/cheats-for-geting-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/chat-hack-10-roblox_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/can-you-get-robux-for-free_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_off00002f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9C 22364 bytes
SHA-256: a744ca0edb6268ac72be870575b4f427b8b70b9bd5866803621d35e549fab0cc
font_01_sfnt_off0000612c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612C 18092 bytes
SHA-256: aeec47090e2d397d52e6994ac52fcd26f4fdd646fe6594f845e9ca54af877ae9

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