PDF malware analysis — malicious · ea0f3eb17e0710b0

MALICIOUS

PDF

47.7 KB Created: 2021-06-03 08:43:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: fc1d21d0415c546c217487ba943e053f SHA-1: a3ee54b1952c89ec536d8fb7b470d87537b2aee9 SHA-256: ea0f3eb17e0710b0ee5affaad6f5136736496c41ba02c721cfe2bd8aee8c4dc7

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many of which point to PDF files on the same domain, suggesting a link farm for SEO manipulation or to distribute potentially malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a malicious intent to redirect users to external sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

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.online/app/406889139/coin-master-daily-free-spins-blog-game-hack PDF link annotation
- https://www.kabadixpress.com/uploaded_files/userfiles/files/coin-master_GM406889139.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/coin-master-website_GM406889139.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/coin-master-heaven-links_GM406889139.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/roblox-website-robux_GM431946152.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/coin-master-bonus_GM406889139.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/www-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.kabadixpress.com/uploaded_files/userfiles/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.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
`stream_004_off00005339.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5339	24848 bytes
SHA-256: `4daa3dde4b158c314a76e98daf90ead48dfd31831e0e9ccd82e3658f8f666d82`
`font_01_sfnt_off00008c5e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C5E	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00009610.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9610	18812 bytes
SHA-256: `99efaab321cd8bd4771148dad361c5d136942e4fae15d22f58752892cb19a04e`

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