PDF malware analysis — malicious · 63329db6b0093be2

MALICIOUS

PDF

46.0 KB Created: 2021-06-11 07:15:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 1ea1902e5650f282334035a59534f615 SHA-1: a87fdf56bb6f4620afe1659ea05a4332ad810db8 SHA-256: 63329db6b0093be2b1421f5e26f523c6b7619f1aaea0adf078dacfee410e8eb7

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external websites, many of which appear to be part of a link farm designed to host malicious files. The document body and extracted URLs suggest a lure related to obtaining free items or currency for the game Roblox, a common tactic for distributing malware. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/free-money-glitch-roblox-jailbreak-game-hack
- https://taxandmore.nl/wp-content/uploads/fsqm-files/hack-roblox-xyz_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/test-all-roblox-gear-hats-and-shirts-free_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-free-money-on-roblox-retail-tycoon_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-tamil-songs-music-codes-for-roblox_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-facebook_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-any-roblox-shirt-for-free_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/case-clicker-cheats-roblox-2021_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-roblox-accounts-2021-with-robux_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-tiktok-likes-app_GM835599320.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/how-do-i-hack-roblox_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-free-robux-the-real-way_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/funny-hack-scripts-roblox-pastebin_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-only-code-hack_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-speed-hack-2021_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-windows-10-edition-free_GM479516143.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-roblox-promo-codes-not-expired_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-800-robux-for-free-nov-2021_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-games-that-you-can-play-for-free_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-java-free_GM479516143.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-no-generator-no-survey_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005206.bin` `131b42f155a707be8bce4b1ae02500df25f9bc2c42d31b1d064edd1b9dac8f9c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5206	26140 bytes
`font_01_sfnt_off00008e9f.bin` `32f09555e89c4fa1058fe2172ea17077aec120b09182353c3a0e7eee0e659169`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E9F	19276 bytes

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