Malicious PDF — malware analysis report

Static analysis result for SHA-256 07d5c729f4041bd3…

MALICIOUS

PDF

34.1 KB Created: 2021-07-08 19:41:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6fa341155c5ec73edbbc8413f4021d63 SHA-1: 6c2804094859ee2f62ac58f08ea283fb3193543f SHA-256: 07d5c729f4041bd3ccf78cab9a6d5c2863748e76bd8a6377a4f116f1c6d910e6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to redirector infrastructure, specifically advertising 'Coin Master Hack 2021 Free' and similar game-related cheats. The primary link, http://netcdn.tw/app/406889139/coin-master-hack-2021-free-game-hack, is flagged as malicious. The document's content and embedded URLs strongly suggest a social engineering lure to trick users into visiting malicious sites, likely for financial gain or further malware delivery.

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/coin-master-hack-2021-free-game-hack In PDF document text
    • http://cintabaca.org/katalog/repository/como-hackear-roblox-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-2021-february_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/mcpe-com_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/royalty-free-music-roblox-id_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/spin-coin_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-free-robux-giveaway-live-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/vuxvux-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-a-robux-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/roblox-games-com-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_off00002eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EEB 22704 bytes
SHA-256: 2e030260a1be877da29fc5cd29a81b3a75e0732bf950df836e07e7a8df63ac43
font_01_sfnt_off0000617e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617E 18568 bytes
SHA-256: df7a437ec40fba4f049db35f275eeb7d22d786e3ebf47b4df0865a8e3590fb63

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