PDF malware analysis — malicious · f41ff6f7b55b8898

MALICIOUS

PDF

46.4 KB Created: 2021-06-02 16:07:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 388fffc7b35061f2831066de0e20560c SHA-1: b8a9c91073070992ab1b4dbc3e3c951f44cc3073 SHA-256: f41ff6f7b55b8898c8725451ccd72d753bd01daebc553c6d77e69175646af128

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links to external websites, many of which are presented as generators for popular game items like Robux or free spins. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a link farm or SEO abuse tactic. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9748

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/free-robux-generator-net-game-hack
- https://www.advancedcube.com/uploaded_files/userfiles/files/freer-pro-tiktok-fans_GM835599320.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-cheats-2021_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/today-free-spin-link-for-coin-master_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/minecraft-java-edition-download-free_GM479516143.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-robux-generator-no-verification-2021_GM431946152.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-hack-online-cheat_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-pc_GM431946152.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/pokemon-go-free-or-alolan-muk_GM1094591345.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/minecraft-hack-download_GM479516143.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-spins-coin-master-links-2021_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/how-to-get-free-cards-in-coin-master_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-spins-coin-master_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-roblox-animations_GM431946152.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/minecraft-games-free-download_GM479516143.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004fe7.bin` `8cb62b445ecb3a5fea38309b87f28b0cb086741fcf855a4cee96148f6a568b87`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4FE7	24544 bytes
`font_01_sfnt_off00008878.bin` `77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8878	2832 bytes
`font_02_sfnt_off00009228.bin` `b68b93d2b132aa632521ed487088141ae03da8cb8b86e012a36f97e699342812`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9228	18344 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.