PDF malware analysis — malicious · 21027eea9f701593

MALICIOUS

PDF

45.9 KB Created: 2021-05-12 18:04:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 106165c3d76f57c430b8a36566b82ebc SHA-1: ce99d962e439ee8647020f755d038b36a1cf4d6a SHA-256: 21027eea9f70159353bf007bcb7ed08475b8d7bcd6042fab232069f59059fb07

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various game-related hack and free spin sites. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document with high confidence. The embedded URLs suggest a campaign focused on SEO spam or directing users to potentially malicious download sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

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/406889139/blogspot-coin-master-game-hack
- https://fridaytravelnepal.com/userfiles/files/how-to-downgrade-minecraft-pe_GM479516143.pdf
- https://fridaytravelnepal.com/userfiles/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdf
- https://fridaytravelnepal.com/userfiles/files/minecraft-pe-hack-client_GM479516143.pdf
- https://fridaytravelnepal.com/userfiles/files/coin-master-2021-free-spins-link_GM406889139.pdf
- https://fridaytravelnepal.com/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdf
- https://fridaytravelnepal.com/userfiles/files/coin-master-hack-no-survey-or-verification_GM406889139.pdf
- https://fridaytravelnepal.com/userfiles/files/hacking-apps-for-roblox_GM431946152.pdf
- https://fridaytravelnepal.com/userfiles/files/coin-master-32-android-mod-hack-apk-download_GM406889139.pdf
- https://fridaytravelnepal.com/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdf
- https://fridaytravelnepal.com/userfiles/files/free-minecraft-maps-pe_GM479516143.pdf
- https://fridaytravelnepal.com/userfiles/files/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdf
- https://fridaytravelnepal.com/userfiles/files/roblox-free-robux-com_GM431946152.pdf
- https://fridaytravelnepal.com/userfiles/files/coin-master-hack-pc_GM406889139.pdf
- https://fridaytravelnepal.com/userfiles/files/coin-master-free-link-today_GM406889139.pdf
- https://fridaytravelnepal.com/userfiles/files/hack-coin-master-download-ios_GM406889139.pdf
- https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-and-coins-hack_GM406889139.pdf
- https://fridaytravelnepal.com/userfiles/files/how-to-get-free-robux-app_GM431946152.pdf
- https://fridaytravelnepal.com/userfiles/files/free-robux-gen_GM431946152.pdf
- https://fridaytravelnepal.com/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdf
- https://fridaytravelnepal.com/userfiles/files/coin-master-hack-tuts_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004d5c.bin` `04dc769225c8803490dcf7fe1f029ecd5138cb4f2e189d7d392aa5fd0884cf8f`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D5C	24896 bytes
`font_01_sfnt_off0000870d.bin` `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x870D	2840 bytes
`font_02_sfnt_off000090bf.bin` `70576f8f42aad5e9047874363a3070dcdf9b24213dd74598ede00c9fec6f13a3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90BF	18300 bytes

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