PDF malware analysis — malicious · 19a0b1441c0aedb5

MALICIOUS

PDF

32.2 KB Created: 2021-07-05 04:03:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: e1801a32fbc1025fce72a120301543e0 SHA-1: ad66529261329c8c612e36a8e288cb7b654c2c94 SHA-256: 19a0b1441c0aedb57a56add9719870f6575d4bdc636fbe34574f66bdcb84decc

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 are related to game cheats and hacks, suggesting a lure for users to download potentially malicious files. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URIs further supports a malicious intent. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.tw/app/479516143/free-online-minecraft-server-game-hack
- https://www.mierepair.com/uploaded_files/userfiles/files/how-to-get-robux-without-human-verification_GM431946152.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/easy-ways-to-get-free-robux_GM431946152.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/free-roblox-executor-no-key_GM431946152.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/roblox-free-robux-by-join-groups_GM431946152.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/ear-free-spins-for-coin-master_GM406889139.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/did-roblox-get-hacked_GM431946152.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/roblox-mod-menu-download-free_GM431946152.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/free-robux-only-username-no-human-verification_GM431946152.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/free-robux-no-generator_GM431946152.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/wurst-client-112-2_GM479516143.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/free-minecraft-survival-server_GM479516143.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/flip-master-coins-hack_GM406889139.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/hack-coins-in-coin-master_GM406889139.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/free-robux-without-human-verification-no-survey_GM431946152.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/free-minecraft-client_GM479516143.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/free-robux-hack-generator_GM431946152.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/tower-defense-hack-roblox_GM431946152.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/delphini-harry-potter-roblox-free_GM431946152.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/free-spin-link-for-coin-master-haktuts_GM406889139.pdf
- https://www.mierepair.com/uploaded_files/userfiles/files/hack-para-adopt-me-roblox_GM431946152.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_off00002be4.bin` `772b19e7c612547f077110f76aa4615e08ef687057130efc2200d99fe2ffcc89`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2BE4	21868 bytes
`font_01_sfnt_off00005c0a.bin` `ea48da23feaa4b35a7f39358826d5f3dae4cfa55dbe68043d941828313bdfd93`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C0A	18044 bytes

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