PDF malware analysis — malicious · ebda9df439b01c83

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 16:13:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 9d1d594da57ce9254dcf461cb73756b3 SHA-1: ab220f482c710e33ec83bea0ec6c4ed031098095 SHA-256: ebda9df439b01c837e270568092cca50e187d56904a7c5a164814bb82323dfd2

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA or human verification prompt to trick the user into interacting with it. It contains an external URI pointing to a URL that appears to be a lure for game-related hacks, suggesting the document's purpose is to facilitate the download of a second-stage payload. The ML classifier also strongly indicated maliciousness.

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.online/app/406889139/coin-master-free-gift-link-2021-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/robux-hack-tools_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-free-trial_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/robux-free-online_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-daily-bonus_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.

Filename	Kind	Source	Size
`stream_004_off000050de.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x50DE	24124 bytes
SHA-256: `acdf4186b84dff924a5672cff92571b57dccfbf53404199fb222b05a72e6ddc6`
`font_01_sfnt_off00008795.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8795	18284 bytes
SHA-256: `00f588a17a5ec62cfb33c50734468f0ac7c021c7f981e3ddf1024eb2998eadd5`

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