PDF malware analysis — malicious · 2b95f4ba7bb2a43f

MALICIOUS

PDF

47.9 KB Created: 2021-06-10 20:41:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 504342b7639e47a93a790c65d9ab7b75 SHA-1: 7bdb2444c96d8e242f0f283c498ec6e52dd07465 SHA-256: 2b95f4ba7bb2a43f03b3f337eb22a4185277a66bef2e5e3ed2ba8cd2842b263d

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which appear to be part of a link farm designed to attract users searching for game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests a potential download or redirection to malicious content. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

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-roblox-games-unblocked-game-hack
- https://brsolutions.pl/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-on-a-phone_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/free-games-related-to-roblox_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/roblox-high-school-2-money-hack_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/how-do-u-get-free-robux_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/roblox-banning-simulator-hack-download_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/how-to-get-hacks-that-offect-other-players-in-roblox_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/descargar-hack-phantom-forces-roblox_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/roblox-detects-cheat-engine_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/how-to-install-minecraft-for-free_GM479516143.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/roblox-bear-mask-free_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/roblox-cheat-ninja-legend_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/roblox-hack-client-no-survey_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/how-to-hack-roblox-on-ios_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/how-to-hack-super-simon-says-on-roblox_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/how-to-get-minecraft-realms-for-free_GM479516143.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/bunny-ears-roblox-free_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/roblox-gfx-render-free-to-use_GM431946152.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/minecraft-hack-mod_GM479516143.pdf
- https://brsolutions.pl/wp-content/uploads/fsqm-files/codes-roblox-pants-hacker_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005172.bin` `0e388378bfaa84ee288084a695a6870b603857c9a27555dac9a481287fffb368`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5172	25284 bytes
`font_01_sfnt_off00008c89.bin` `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C89	2880 bytes
`font_02_sfnt_off00009674.bin` `b4c729d43d942cc9a26bc34a59ab88536d58317c90ab45b1c552afd9f692e790`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9674	18968 bytes

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