PDF malware analysis — malicious · 6483b3d41735b6a0

MALICIOUS

PDF

36.2 KB Created: 2021-06-29 14:50:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 11267b70add9424fcbbb2c53b271c204 SHA-1: d3f4b9d8a26fd3b6f9a7eb372b0b359cb2df70dc SHA-256: 6483b3d41735b6a0a9ae94f51bfb3447f1dfe23d91e7fdd41cb9dd4fdcf6c48b

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized PDFs designed to lure users with promises of free in-game items. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, and the ML classifier strongly flagged this PDF as malicious. The document body and extracted URLs suggest a scam or phishing attempt to trick users into downloading potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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 http://netcdn.co/app/431946152/free-items-in-roblox-2021-game-hack PDF link annotation
- https://www.iseas.com/uploaded_files/userfiles/files/hoe-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-free-admin-in-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-link_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/free-clear-shirt-roblox_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/free-roblox-hacker-co_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/free-limiteds-roblox_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/como-denunciar-a-un-hacker-en-roblox_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-free-spins-iphone-2021_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_002_off00003375.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3375	23028 bytes
SHA-256: `c6141f39e2b3d546826f40fbf95707df624944dc00f5fb94be69beec25675a3b`
`font_01_sfnt_off00006737.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6737	19416 bytes
SHA-256: `298f07eaf300686b8ecc4e8ab3cb8cb2ce3d4f41be54b2a79a6609cbf6cb9f01`

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