PDF malware analysis — malicious · eff7044cfc10aa75

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 12:21:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 019c0fb36ba7dea6481a08be656289f0 SHA-1: 4d115795861fb63b20c19c2f681919a69c63b9d9 SHA-256: eff7044cfc10aa75d87d8aaafb4b4f6d65c8eae038c4ff2c771f8dfab8e85709

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous embedded links, many of which are presented as download buttons for games and cheats, indicating a lure-based attack pattern. The PDF_SEO_LINK_FARM heuristic firing suggests a large number of external links were generated, likely to obscure the malicious intent and distribute the payload across multiple domains. The ML_NYX_PDF_MALICIOUS score further supports the classification of this file as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

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.online/app/431946152/how-to-robux-game-hack
- https://ifef.es/ckfinder/userfiles/files/coin-master-mod-version-free-download-ios_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/minecraft-free-download-2021_GM479516143.pdf
- https://ifef.es/ckfinder/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/minecraft-free-games-no-download_GM479516143.pdf
- https://ifef.es/ckfinder/userfiles/files/how-can-i-get-robux_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/free-spins-coin-master-facebook_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/free-unlimited-coins-for-coin-master_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/roblox-games-to-play-for-free_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/minecraft-font-free_GM479516143.pdf
- https://ifef.es/ckfinder/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/robux-codes-generator-no-human-verification_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/was-minecraft-ever-free_GM479516143.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-hack-ios-app_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/robuxmatchcom-free-robux_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/roblox-builders-club-free_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/minecraft-pocket-edition-hack_GM479516143.pdf
- https://ifef.es/ckfinder/userfiles/files/how-to-get-free-cards-for-coin-master_GM406889139.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_off00004f2d.bin` `a0944666550386f3dd38ce779ad81c3ee018c8b88fed1f70028b879b8509cd14`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4F2D	26696 bytes
`font_01_sfnt_off000089c9.bin` `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x89C9	5696 bytes
`font_02_sfnt_off000096db.bin` `af8ba31d2db42f57c5919c5866ea8f188002d1289ad2625a2185714ee266c637`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x96DB	18012 bytes

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