PDF malware analysis — malicious · d0ec848aaa7948a3

MALICIOUS

PDF

43.1 KB Created: 2021-06-03 08:00:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 444ec7e4d53109900279be4e8c1d9dca SHA-1: f8bb87cd5d243c6e4b64ca6818144b049b26b4be SHA-256: d0ec848aaa7948a3c5eb34a1a923d01b04224eaf70240939075b3a93943c55b2

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a fake CAPTCHA lure, designed to trick the user into interacting with the document. It also embeds external URIs pointing to potentially malicious content, such as game hacks. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of a malicious payload being delivered.

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-tool-hack-game-hack PDF link annotation
- https://biospray-online.com/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/get-free-coin-master_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/best-coin-master-hack_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/robuxglobalcom_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/roblox-free-models_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/minecraft-free-education_GM479516143.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/collect-robux_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
`stream_004_off00004df0.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4DF0	25168 bytes
SHA-256: `0949652705753481b7c2a8528ebecb5adb547b613afe3bbc4be5e4ff5b704408`
`font_01_sfnt_off0000876b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x876B	17788 bytes
SHA-256: `e912918c4fc85248fb6c40893d94ff9b1d0d989876d1dcc2d187104eb46d4add`

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