Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e3c165a4a4b7934…

MALICIOUS

PDF

35.0 KB Created: 2021-07-20 03:33:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 929a738fd9e1cde71bbe90260ada862e SHA-1: 9a36a55937c236b68bf62fd25fdda9cbe3ff833d SHA-256: 6e3c165a4a4b79344a784045a26da04490a4eadf4e01167799eea50a780194ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure, presenting itself as a 'Coin Master Claim Free Spins' generator or game hack. It contains multiple embedded URLs, including a primary redirector at http://netcdn.tw/app/406889139/coin-master-claim-free-spins-game-hack, which is flagged as malicious. The document's structure and embedded links strongly suggest it is designed to trick users into downloading further malicious content or visiting compromised websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

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-claim-free-spins-game-hack In PDF document text
    • https://eurekaaccounting.co.za/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/roblox-studio-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
stream_002_off00003255.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3255 23532 bytes
SHA-256: 4f4d591d43df3fc937036c67662330bbc460d940f7d578c2385f7f7089e2a43d
font_01_sfnt_off0000673c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x673C 18220 bytes
SHA-256: 4508a7247666ecd7f475af3e2510e2d7297b60fda6d209b486c2dc6be28a63e8

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