Malicious PDF — malware analysis report

Static analysis result for SHA-256 e187d5c65a7cad61…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 17:04:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7deb6bfdc1be3311ae1f7ae98d68c540 SHA-1: e352a118f9d4bea9aede4a263148c571349d61e6 SHA-256: e187d5c65a7cad61fa29eda2436df7a6e3aabed2ab0f27c9523307d0cf804eee
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a game hack lure, specifically referencing 'Coin Master' and 'Roblox', to entice users to click on embedded links. These links, such as http://netcdn.tw/app/406889139/how-do-you-get-free-food-in-coin-master-game-hack, likely lead to malicious websites designed to exploit users or deliver further malware. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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 http://netcdn.tw/app/406889139/how-do-you-get-free-food-in-coin-master-game-hack PDF link annotation
    • https://goodtools.tw/upload/files/hack-download_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/a-free-game-called-roblox_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/generation-for-free-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/gun-giver-roblox-script-lua-hack_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-scp-containment-breach-hack_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/clicker-games-in-roblox-free-admin_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/hack-roblox-ropa_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-hacks-cheatscom_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-spins-on-coin-master-2021_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
font_00_sfnt_off00003094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3094 22488 bytes
SHA-256: 54746d2d059157a77a2c19606a76bd5b5233d192ca0c111f02d193ec85a04e74
font_01_sfnt_off0000629e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629E 18808 bytes
SHA-256: 5b19657b867659428d4d777ae35749cc306009ca32d66e2ab307e9e90d021f01

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