PDF malware analysis — malicious · 802558b657a90398

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 01:41:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: d934ba120ad242454116e2be62417951 SHA-1: c85e342b4d8578599f2b86fb614dfbc64b95b38f SHA-256: 802558b657a90398dccbceb774d8850bee5baed380a8eab8f4243106d65e301c

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on `jonaled.com` and appear to be part of a link farm designed to attract users searching for game cheats and free in-game items. The primary URL `http://netcdn.tw/app/406889139/coin-master-daily-free-spins-game-hack` suggests a lure for Coin Master game hacks. The ML classifier strongly indicated maliciousness, and the presence of a link farm and a download button lure further support this assessment.

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/coin-master-daily-free-spins-game-hack
- https://www.jonaled.com/uploaded_files/userfiles/files/moonactive-free-spins_GM406889139.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/how-to-use-mega-to-hack-roblox_GM431946152.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/how-to-get-free-chest-in-coin-master_GM406889139.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/coin-master-hack-for-ios_GM406889139.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/roblox-free-shirt-templates-white-suit_GM431946152.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/daily-free-spins_GM406889139.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/free-pokemon-t-shirts-roblox_GM431946152.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/how-to-get-free-robux-inspect_GM431946152.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/free-robux-hack-no-verification_GM431946152.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/hacks-seite-roblox_GM431946152.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/free-ailes-roblox_GM431946152.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/how-to-prevent-roblox-from-detecting-cheating_GM431946152.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/roblox-cheat-net_GM431946152.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-mobile-device_GM431946152.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/coin-master-hack-no-verification-ios_GM406889139.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/tiktok-free-followers-instantly_GM835599320.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/tiktok-free-views-apk-download_GM835599320.pdf
- https://www.jonaled.com/uploaded_files/userfiles/files/denis-how-to-get-free-robux-im-not-even-kidding_GM431946152.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_off0000323c.bin` `abd93ce06a2be2399eec17b56b70a816a1632a6dd658d9425352dd64d6b53da8`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x323C	22888 bytes
`font_01_sfnt_off000065bb.bin` `d4477381221bf12ecca5ad3e1f3dc1fc74afabeab8ec0ad27ac375f28b3d2402`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65BB	18596 bytes

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