Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4933449453d10de…

MALICIOUS

PDF

42.6 KB Created: 2021-05-15 05:55:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: df15b2d88b9cc7726260373403662c6e SHA-1: 69d8efccf681436fa19bc5f55f28710d8dd485dc SHA-256: a4933449453d10de7cfb3120ef8a85cf596e5d85c42bc0e28b71fd680a98267d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure URL is https://netcdn.xyz/app/406889139/how-to-hack-coin-master-pc-game-hack, which is presented as a way to get game cheats. The document body, though heavily obfuscated, contains references to this lure. The presence of embedded links and the nature of the lure strongly suggest a phishing or redirection attack, likely intended to lead users to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/how-to-hack-coin-master-pc-game-hack In PDF document text
    • https://icefuture.ru/images/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/toolbox-mod_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-win-robux_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-hack-that-actually-works_GM406889139.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_003_off00004b27.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B27 25500 bytes
SHA-256: 00eb0552e072eb2c94493603788c0aa5e6280f1ccb29ae513d52d6980764085b
font_01_sfnt_off000084d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D0 18036 bytes
SHA-256: 1a818eca8a2cc351c403d69ccdd0c2c8a1d28d4754b907fab6e3d6b2894c5913

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