PDF malware analysis — malicious · 083af2a29955f277

MALICIOUS

PDF

36.1 KB Created: 2021-07-04 15:35:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 4b2fcbbc71aea304789d3d9fa4869c95 SHA-1: 7a92e1f2de570f14ae6e9c8285293acfb8985d7e SHA-256: 083af2a29955f2773024e030de55347198a8b52e33157fb13c231ff5364f0436

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous external links, many of which point to other PDFs, suggesting a link farm or SEO manipulation tactic. One embedded URL, http://netcdn.tw/app/406889139/daily-free-spins-for-coin-master-game-hack, is likely intended to deliver a payload or redirect the user to a malicious site. The presence of a 'download button' heuristic further supports the malicious intent of luring users to download content.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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/406889139/daily-free-spins-for-coin-master-game-hack
- https://www.italisaitaly.com/uploaded_files/userfiles/files/free-coins-for-coin-master_GM406889139.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-attack-block-hack_GM406889139.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/60-free-spins-coin-master_GM406889139.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/free-robux-websites-no-human-verification_GM431946152.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/free-aimbot-for-roblox_GM431946152.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/free-coin-master-app_GM406889139.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/all-game-roblox-admin-gui-hack-working_GM431946152.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-cheats-without-verification_GM406889139.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-hack-quora_GM406889139.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/free-robux-no-verification-2021_GM431946152.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/minecraft-iphone-free_GM479516143.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/tiktok-fans-for-free_GM835599320.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/how-do-you-hack-an-account-on-roblox_GM431946152.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-tricks_GM406889139.pdf
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-spin-hack-no-verification_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_002_off0000362f.bin` `eda4ecf451bf0b75210d314d818028aaee7d9906b8cca8ee5be16818b77a09c9`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x362F	22876 bytes
`font_01_sfnt_off0000699f.bin` `d68a34b156bc539a9175b9519b639082689f9c1ce84e1c9e30ec2d7eb2f7d22d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x699F	18596 bytes

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