Malicious PDF — malware analysis report

Static analysis result for SHA-256 7935fa88e78276fc…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 00:12:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-14
MD5: 2c6c1829960608559c69d7261f5c608e SHA-1: 8123bc47fa0757759b07f7607546b40d0d0527be SHA-256: 7935fa88e78276fc770b331985a10529fd42acc70983e4b08ae7df43eb917443
180 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/how-to-get-free-spins-and-coins-on-coin-master-game-hack In PDF document text
    • https://amiranet.com.br/files/files/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://amiranet.com.br/files/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://amiranet.com.br/files/files/hack-dusk-roblox_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/free-roblox-account-with-rpbux-password_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/hack-para-el-catalogo-de-roblox_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/free-robux-no-verify-human_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • https://amiranet.com.br/files/files/hackers-admin-roblox_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/how-to-speed-hack-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/robux-hack-reddit_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • https://amiranet.com.br/files/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://amiranet.com.br/files/files/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/roblox-cursor-hack-lock_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/roblox-moon-tycoon-hack_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • https://amiranet.com.br/files/files/how-to-hack-roblox-accounts-on-phone_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_off00002f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6D 22420 bytes
SHA-256: 7a8dad467bb838bfe39d7e80788dea25b8af35a6e36854e4823ada3e28ef0a1b
font_01_sfnt_off0000614a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x614A 18512 bytes
SHA-256: b5acc537c59d1b7fb5e9a8b7451230baa0910c2ee96a0f773c75b2c56351fbac

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