Malicious PDF — malware analysis report

Static analysis result for SHA-256 0277f747de8e03a6…

MALICIOUS

PDF

42.9 KB Created: 2021-05-15 16:08:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 526ebae244808177ad48fc6d805c8192 SHA-1: 70b520d3862779458f54122520ef5ed7e9919f83 SHA-256: 0277f747de8e03a677d4d990683320fc589a2f11d57b5b18ac25331271b4ce78
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document presents a fake CAPTCHA or human verification prompt to trick the user into clicking a link, which is a common social engineering tactic. The embedded URL leads to a page offering a 'Coin Master Hack', further supporting the lure. While no scripts were directly extracted, the PDF structure and heuristics suggest it's designed to facilitate the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-no-human-verification-game-hack
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/haktuts-coin-master_GM406889139.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-robux-hacker-us_GM431946152.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-online-hack-tool_GM406889139.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-can-u-get-free-robux_GM431946152.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-roblox-clothes-templates_GM431946152.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-get-robux_GM431946152.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/hacked-client-for-minecraft-bedrock_GM479516143.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/roblox-free-robux-com_GM431946152.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/best-way-to-hack-coin-master_GM406889139.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/master-coin-hack_GM406889139.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/download-coin-master-hack-mod-apk_GM406889139.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-free-coins-link-2021-today_GM406889139.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/grab-points-login_GM431946152.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/microsoft-roblox_GM431946152.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/apps-to-get-free-robux_GM431946152.pdf
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-32-mod-hack-apk-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d4c.bin
db9f13863e4aa0c498adf6a2ee0d28d07f52c37ac9538ed837102cf2eb714a64		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D4C 24648 bytes
font_01_sfnt_off000085a6.bin
b53d611e96a32094425b068729023046bb1db9f19d10500fe1599e8fd30759af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85A6 18248 bytes

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