Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8e0534a0e38439…

MALICIOUS

PDF

33.6 KB Created: 2021-07-19 14:03:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 7f2c7d6e4d852145fab3169684891d0b SHA-1: 2d030973fd52a03d5c95eef74728ece6fc1eb453 SHA-256: 5d8e0534a0e38439c1f6c9d0f85a2dff43f93bee55ad7b287fabf657ad3bdf62
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/coin-master-free-spins-app-game-hack In PDF document text
    • https://letturatarghe.it/images/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • https://letturatarghe.it/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://letturatarghe.it/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://letturatarghe.it/images/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://letturatarghe.it/images/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • https://letturatarghe.it/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://letturatarghe.it/images/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • https://letturatarghe.it/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://letturatarghe.it/images/free-robux-com_GM431946152.pdfIn PDF document text
    • https://letturatarghe.it/images/rbxfree-com-free-robux_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_off00002fdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FDC 22716 bytes
SHA-256: 2349d914ecf0c4d89c945610be06276cdc547823557f53d5f9859615108e2e05
font_01_sfnt_off00006282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6282 17884 bytes
SHA-256: 21af4872a04c62c178ac31651a333ecdcea5bb1ed4ceeeef1956d42e8fc37ea8

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