PDF malware analysis — malicious · f78b4b951a81fcbd

MALICIOUS

PDF

35.4 KB Created: 2021-07-03 10:48:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: afafeafe54021587dfc680139a55e4fb SHA-1: 12596f61efb465f1eb0d27e40d550d5d551383ca SHA-256: f78b4b951a81fcbdb4637472138134ac368cd485c39d511ca055a8939eaea263

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded links and a document body that promotes free game currency and hacks, such as Robux and Coin Master spins. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the ML classifier strongly suggests maliciousness. The primary attack pattern involves directing users to potentially malicious websites via these links, likely for credential harvesting or malware distribution.

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.co/app/431946152/is-there-a-way-to-get-free-robux-game-hack
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-hack-online_GM406889139.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/gamekit-roblox-800-robux-free_GM431946152.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-elemental-battlegrounds-hack-gems_GM431946152.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-get-free-robux-inspect-element-2021_GM431946152.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-face-750k-sales-roblox_GM431946152.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-robux-meep-city_GM431946152.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-spins-from-coin-master_GM406889139.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/minecraft-pc-free_GM479516143.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coinmasterfreespinlink_GM406889139.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-spins-coin-master-site-wwwquoracom_GM406889139.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-free-rare-cards_GM406889139.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/download-hack-coin-master-apk_GM406889139.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-robux-2021-no-verification_GM431946152.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/jojo-s-tops-free-roblox-games_GM431946152.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/2021-free-coin-master-spins_GM406889139.pdf
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-free-spins-link-facebook_GM406889139.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_off000032e0.bin` `615d059f4979519206b66a947294c09a7cf4f14f1c4331f1ab7fd0931cef85b3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32E0	22284 bytes
`font_01_sfnt_off00006488.bin` `ab7ba1a3ae240e4ee08c4c4f60ea65632c07d764c3c2f84f8903e8b00cabe730`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6488	19364 bytes

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