PDF malware analysis — malicious · 18ef3e60a26f866e

MALICIOUS

PDF

45.4 KB Created: 2021-05-17 05:00:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: d91b5915f20a3bb96d2cf5acee62e747 SHA-1: 54390a68f58d77fd93f4cf1c9284172db10dbf9b SHA-256: 18ef3e60a26f866ea305bf7425a6af7124db21a4edc16bf2185d65b55fb1be23

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which are structured as SEO-optimized PDF links, suggesting a link farm designed to drive traffic to potentially malicious content. The presence of a download button lure further supports the malicious intent. The document body itself is heavily obfuscated but contains references to game hacks and cheats, aligning with the link farm's theme.

Machine Learning

Nyx PDF Classifier malicious score 0.9507

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 https://netcdn.xyz/app/431946152/easy-points-gg-game-hack PDF link annotation
- https://luyenthitoanpro.com/public/upload/files/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-robux-cards_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-private-minecraft-server_GM479516143.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/try-coin-master-hack_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/get-free-roblox_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004a1d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4A1D	24388 bytes
SHA-256: `46cc8b4c6fa624f6144882dee2412ba3f7ee681ec5d78e11c73b5900092943e2`
`font_01_sfnt_off000081d9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81D9	3884 bytes
SHA-256: `40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf`
`font_02_sfnt_off00008e81.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E81	18416 bytes
SHA-256: `6b06496f0627e98e9956adf732d3f0c6c832a89297aef51d4a43ce0d20a27fb4`

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