Malicious PDF — malware analysis report

Static analysis result for SHA-256 3711e473d52188fe…

MALICIOUS

PDF

51.8 KB Created: 2021-06-11 05:23:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f30f0b147fb2a80fb6d40ce1f99edcc4 SHA-1: c5e97f1cf3cc29ea2c95677bfdcf7f979ab63e93 SHA-256: 3711e473d52188fe0d3f9e4aa02f44c2fd0f5da8fe31d75efe00e6caa928f9d1
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA, a common lure to trick users into clicking malicious links. The embedded URL and numerous other URLs point to sites offering game hacks, suggesting a phishing or malware distribution attempt. While no scripts were directly extracted, the PDF structure and heuristics indicate it's designed to exploit user interaction to lead them to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9872

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.tw/app/431946152/roblox-crashes-when-cheat-engine-is-open-game-hack PDF link annotation
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-vehicle-simulator-money-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/crashed-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-save-hacked-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/booga-booga-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-tower-of-hell-cheat_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/all-roblox-games-you-can-hack-with-proxox_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/nonsence-dimond-roblox-pet-simulator-hack_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-hack-2021_GM431946152.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_off00005410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5410 37676 bytes
SHA-256: 47411b471f1787ddbfc158e34cb947d587c3a62874679a6b908caed7c8848197
font_01_sfnt_off0000a5e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E1 19064 bytes
SHA-256: 2ef4d253963f2148aa2ca8852ec85eee2cd26ac4eb1e7dd521dbbc39dc23d712

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