PDF malware analysis — malicious · ecdaa44faf4240ef

MALICIOUS

PDF

46.7 KB Created: 2021-06-10 20:40:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 8f6861c84ee9876877dee0a107206ab3 SHA-1: a9b28c60f56d12cd642c701b3d5da0b93dfd49b7 SHA-256: ecdaa44faf4240ef7895acf533e235f124905892318ceb47e43e34cd4b947daa

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and a link farm heuristic indicates a large number of external links, many of which are related to game cheats and downloads. The ML classifier also flagged this PDF as malicious. The presence of these links suggests the document is designed to trick users into downloading potentially harmful files or visiting malicious websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9832

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/sharkblox-trash-gang-shirt-free-roblox-game-hack
- https://www.advancedcube.com/uploaded_files/userfiles/files/robux-earning-websites_GM431946152.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/minecraft-pocket-edition-apk-free-download_GM479516143.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/best-free-spins-for-coin-master_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-34-6-hack_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/minecraft-hacked-client_GM479516143.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-daily-spin-free_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/how-can-u-get-free-robux_GM431946152.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/how-to-download-minecraft-hacks_GM479516143.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-robux-discord_GM431946152.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-fire-coin-master_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/minecraft-pe-hacked-client-download_GM479516143.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-minecraft-account-generator_GM479516143.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-coin-master-spins-link_GM406889139.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-robux-no-verification-2021-android_GM431946152.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/earn-free-robux-on-roblox_GM431946152.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/real-free-robux-codes_GM431946152.pdf
- https://www.advancedcube.com/uploaded_files/userfiles/files/today-free-spin-coin-master_GM406889139.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_off00005540.bin` `892a55b3e31e7551a68fc5a537e9facbe799beed87c45003bc7675271cda03fa`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5540	27248 bytes
`font_01_sfnt_off0000921d.bin` `06ad0634a97a3a33d8e439fe7847a6d3cf0a184f56c8071c19e8881d8e9f5eef`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x921D	19024 bytes

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