PDF malware analysis — malicious · 840d076d7e7037c8

MALICIOUS

PDF

44.9 KB Created: 2021-05-11 06:35:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: c5f8d2d106f4eb714d5cae0df970b5f0 SHA-1: 137b5e2406fab5f9710f60fafb59bc3878072675 SHA-256: 840d076d7e7037c893d68a6dda36c4b044496dd499f7808e0c8f45215a6d01cb

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 domains that appear to be part of a link farm designed to distribute malicious content. The document body and embedded links explicitly promise hacks and cheats for games like Coin Master and Roblox, indicating a social engineering lure to trick users into downloading potentially malicious applications or visiting compromised sites. The ML classifier also strongly flagged this PDF as malicious.

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 https://netcdn.xyz/app/406889139/coin-master-hack-version-2021-download-game-hack
- https://www.iseas.com/uploaded_files/userfiles/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/bloxpage-free-robux_GM431946152.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-link_GM406889139.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/gain-robux_GM431946152.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/roblox-free-items-2021_GM431946152.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-link_GM406889139.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-code-2021_GM406889139.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-hack-ios-cydia_GM406889139.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/free-robux-codes-generator-no-verification_GM431946152.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-card-hack-app_GM406889139.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/hack-coin-master-2021-pc_GM406889139.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/is-there-any-way-to-get-free-robux_GM431946152.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-free-roblox-gift-cards_GM431946152.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/roblox-adopt-me-hacks-2021_GM431946152.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-hack_GM406889139.pdf
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-hack-mod-game-download_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_003_off00004e53.bin` `878efdc26ac510140d77e7d1c4ec3791f7a4d0ab5e312f71e6cf0f84e38b5480`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4E53	28860 bytes
`font_01_sfnt_off00008b52.bin` `cd88061e10041738ec7274ba91306f286ba33e5d15dbcf077940b1575ec855e5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B52	18832 bytes

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