Malicious PDF — malware analysis report

Static analysis result for SHA-256 67cb7e47d28955fe…

MALICIOUS

PDF

45.6 KB Created: 2021-05-17 13:05:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2df10b5ff5a69bdf0205e0b16900dd1a SHA-1: e94124d348351584095f7fb736721d8946b740ba SHA-256: 67cb7e47d28955fe5a6b69655399fd06e52b8aff6c2343a65d9b0f741fd184e4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-15-free-spin-link-today-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/coin-master-15-free-spin-link-today-game-hack In PDF document text
    • http://farmaciaisella.it/images/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://farmaciaisella.it/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://farmaciaisella.it/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://farmaciaisella.it/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://farmaciaisella.it/images/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://farmaciaisella.it/images/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://farmaciaisella.it/images/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://farmaciaisella.it/images/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • http://farmaciaisella.it/images/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • http://farmaciaisella.it/images/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://farmaciaisella.it/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://farmaciaisella.it/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://farmaciaisella.it/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://farmaciaisella.it/images/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://farmaciaisella.it/images/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://farmaciaisella.it/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://farmaciaisella.it/images/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • http://farmaciaisella.it/images/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://farmaciaisella.it/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://farmaciaisella.it/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b58.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B58 24928 bytes
SHA-256: 86f0a6d18d9ef5fa380477b6a021c09a4a6cc4806cf5da083a19db64bb931e4b
font_01_sfnt_off000084e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E5 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008e97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E97 18652 bytes
SHA-256: 5b53a5b683b77cc6f0f815c556bf9926b59998be6e817bd3b756384118128b65

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