PDF malware analysis — malicious · c0327ed430a52d62

MALICIOUS

PDF

44.8 KB Created: 2021-05-13 08:07:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: dd4547d3e8c9a12e7c31c6dfcec29d06 SHA-1: d488591713ff56da526af311760c4a859e83fb56 SHA-256: c0327ed430a52d62962ab94cb646a8468c9b8b8f8b12d7bfc2f34efdab5feaeb

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, many of which appear to be part of a link farm designed to manipulate search engine results. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though partially corrupted, contains a URL that likely leads to a malicious payload or scam page.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

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/moonactive-free-spins-link-game-hack
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/best-way-to-hack-coin-master_GM406889139.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-coins-coin-master-link-2021_GM406889139.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-free-gold-cards-link-2021_GM406889139.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-fan-hack_GM406889139.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/roblox-robux-hack_GM431946152.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/how-to-get-roblox-credit-for-free_GM431946152.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-without-verification_GM406889139.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-robux-no-verify-2021_GM431946152.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-spin-hack_GM406889139.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-spins-coin-master-links-app_GM406889139.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/pasos-para-hackear-coins-master_GM406889139.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/lastrick-com-coin-master-hack_GM406889139.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/mobihack-net-roblox-hack_GM431946152.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-spin-coin-master-game_GM406889139.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/can-i-play-minecraft-for-free_GM479516143.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-links-for-today_GM406889139.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/minecraft-free-android_GM479516143.pdf
- https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004b8f.bin` `c42a07459be40eb8f52b61f635d54f5fa14564045802c8f8d6b0e1d70ad9194c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B8F	24304 bytes
`font_01_sfnt_off0000830b.bin` `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x830B	2880 bytes
`font_02_sfnt_off00008cf6.bin` `de83cce042fd98afd312ce6d9ac17b5793122de6df0909979501f1e1abb9aa75`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CF6	18168 bytes

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