PDF malware analysis — malicious · 5e55a151dc012a0a

MALICIOUS

PDF

44.9 KB Created: 2021-06-02 03:04:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 06719f1cc8596f6df381f9ac5a0d8c3b SHA-1: e9902588839290146f5dc36f6c5995037fdba4f7 SHA-256: 5e55a151dc012a0ad61655755253a0db2b39251d2ec4511be8d358e239b83926

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are SEO-optimized and point to pages related to 'Roblox' cheats and free items. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting a link farm designed to attract users. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the nature of the links and the PDF structure suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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-roblox-shirt-templates-2021-game-hack
- https://acode.com.br/wp-content/uploads/fsqm-files/roblox-hacking-tools-reddit_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/obby-co-nf-free-robux_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/free-roblox-survey_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/free-robux-codes-live-stream_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-2021_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/free-robux-no-downloads-no-surveys_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/roblox-hack-new-dtfb-test_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/roblox-hack-unlimited-robux-and-tickets_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/royal-navy-ships-free-models-roblox_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/free-minecraft-alt-accounts_GM479516143.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/i-got-hacked-on-roblox_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/how-do-you-get-robux-on-roblox-for-free-2021_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021-easy_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/infinite-robux-hack_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/comment-cheat-sur-roblox-dbz-final-stand_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/free-robux-today-pc_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/free-hacking-admin-commands-roblox-jailbreak-2021_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/minecraft-launcher-free_GM479516143.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/free-robux-roblox-promo-codes_GM431946152.pdf
- https://acode.com.br/wp-content/uploads/fsqm-files/tiktok-viewer-free_GM835599320.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005136.bin` `ad8bb56a320eefb914d0953a0188ad58a2abe9573b2f24b827e280ca1000ebe0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5136	24712 bytes
`font_01_sfnt_off00008972.bin` `ab8fe64e6c41782caa49eba716c047f70273e0fcd9fd260fc178e39564bef5ea`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8972	19404 bytes

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