PDF malware analysis — malicious · a1c5443e9ef5c833

MALICIOUS

PDF

44.6 KB Created: 2021-06-10 22:03:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: ab72c7b874c3c2fa80bebc7a0b4fbb25 SHA-1: c6789975dd5d3a5c24f25267e47ebab7256a9b52 SHA-256: a1c5443e9ef5c833477e3d67a0b8f27d1b271c090788b03beae063fbef4a4c9b

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with malicious links. The primary URL, https://netcdn.tw/app/431946152/free-roblox-roblox-hack-game-hack, is likely a landing page for a malicious download or exploit. The document's content and heuristics strongly suggest a social engineering attempt to deliver a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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/free-roblox-roblox-hack-game-hack PDF link annotation
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-roblox-accounts-forums_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-robux-no-download_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-can-i-get-free-spins-on-coin-master_GM406889139.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/give-me-robux-free_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-hack-on-roblox-btools_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/hacks-roblox_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/upside-correctional-facility-roblox-hacked_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/download-roblox-hack-2021_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-100-robux_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-robux-codes-september-2021_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021-easy_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.

Filename	Kind	Source	Size
`font_00_sfnt_off000052c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x52C6	25012 bytes
SHA-256: `10728bc445ec39048fcee4d37645d89484ffa17c80d2fd16b61ac1b4f34f3dea`
`font_01_sfnt_off00008b7e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B7E	18344 bytes
SHA-256: `9d921b2eee93f33e2efc5c53c848117e08d630d06cf868d7193b51dd4894dd93`

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