Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9e67763a9a47032…

MALICIOUS

PDF

34.6 KB Created: 2021-06-27 05:21:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3fab897f07c9cdba44ab15632f7aedf5 SHA-1: 0282d273aa600503d862f37e4fad7db04afc885d SHA-256: f9e67763a9a47032d9aedda3dec88ea64f5517f5ccd364c9d8bd243014d9788a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to websites offering 'free generators' or 'game hacks', a common lure for phishing or malware distribution. The ML classifier also flagged this document as malicious. The embedded URLs, such as http://netcdn.co/app/431946152/free-tix-and-robux-website-game-hack, are indicative of a malicious redirector designed to lead users to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a social engineering attack.

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.co/app/431946152/free-tix-and-robux-website-game-hack In PDF document text
    • http://foo.com.tw/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-admin-hack-2021-february_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/cheat-engine-67-roblox-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-adopt-me-hack-script-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-giver-no-verification_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-mojang-account-with-minecraft_GM479516143.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_off00002e81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E81 22700 bytes
SHA-256: c9825f112dc4816b92f5899c2c0849e88c80395374c438de4d25e33b325fd331
font_01_sfnt_off00006135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6135 19312 bytes
SHA-256: 9817d27024e548dfa6b6ef6e4d36d626d8be483481c7a0f68914cdd005576429

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