Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ee10809711f45a…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 17:00:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 804a61dedd34ab28f105edf39be6d840 SHA-1: 23243f2618f0814970ed56eb3a191481b6f7fad6 SHA-256: 30ee10809711f45a9e51b80a4cec66d7de23cdd9ab5a2aec32a2f725c3acbbac
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous external links, forming a link farm designed to attract users with promises of game hacks and free currency. The primary URL points to a "Coin Master Hack Tool", and the PDF_SEO_LINK_FARM heuristic indicates a large number of similar SEO-optimized PDFs hosted on the same domain. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a malicious workflow aimed at driving traffic to potentially harmful downloads or scam pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-hack-tool-v1-9-download-free-pc-game-hack PDF link annotation
    • https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://mtsn4kukar.com/__statics/gudangsoal/files/how-do-you-get-free-coins-in-coin-master_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_off00004aac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAC 26296 bytes
SHA-256: 086bc723d5b7541d0e69837fcaecd7fa16533903336cb2fed206e43747fa0ce1
font_01_sfnt_off00008616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8616 19016 bytes
SHA-256: 72463d413271541d222c1197f8f9a8edc1a249d3ebb9d07bd42a16f0c907e414

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