Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9116970e4e68db0…

MALICIOUS

PDF

34.6 KB Created: 2021-07-09 09:58:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bebfa00346b0cdd01c4e36bd1789ff24 SHA-1: aba57c2e9c61fce17d57b2efa5d524aa4252f5a2 SHA-256: e9116970e4e68db010ad712874ffb7a1b2f12355ce80218a37691a8c7e76d473
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a prominent link and text related to 'free coins' and 'game hacks', specifically for Coin Master. This lure directs users to the URL http://netcdn.tw/app/406889139/free-coins-coin-master-game-hack, which is flagged as a malicious redirector. The document's primary purpose appears to be social engineering users into visiting this malicious site, likely to deliver a secondary payload or conduct further phishing.

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/free-coins-coin-master-game-hack PDF link annotation
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/break-free-roblox_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/e-free-roblox-meaing_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/roblox-double-jump-hack_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/anti-ban-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-roblox-accounts-and-passwords-with-100-robux_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/roblox-hack-jailbreak-money_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/roblox-people-girl_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-roblox-exploit-lua-script-executor-free-no-virus-please_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/coin-master-free-spins-8-14-2021_GM406889139.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/install-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_002_off000031de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31DE 22920 bytes
SHA-256: e40064cd1fef69f5d1596968108c5e639a266ce7713ec84802ad5b4d34cbc3ab
font_01_sfnt_off0000658b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658B 17996 bytes
SHA-256: db592684bbdaaeb7647633841870edbd5981f70e843d3403859f62ceb8e0c83d

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