PDF malware analysis — malicious · ebfc5b83399c2501

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 11:13:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 7c30486471c2cf8c466182db7975f8be SHA-1: 1319861de0875cfc121b322cbcca8a1a7aed3e4d SHA-256: ebfc5b83399c2501a036c82f019614161b626ddc142604dafc2e2ef91456133a

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are SEO-optimized and point to pages related to 'free spins' or 'hacks' for games like Coin Master and Robux. This suggests a link farm or SEO spamming operation. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into clicking malicious links. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/free-spins-coin-master-hack-game-hack
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/hack-coin-master-for-free_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-with-no-verification-2021_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/best-free-minecraft-texture-packs_GM479516143.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/robux-page_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-today-twitter_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-save_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/best-roblox-hacks_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-2021_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-daily-spins-2021_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-claim-free-spins_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-freebies-2021_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-hack-coin-master-game-without-verification_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/minecraft-skins-download-free_GM479516143.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-cards-hack-2021_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_004_off00005212.bin` `f98f19dcc336cf7391228b7baeebf8f37a682b8574bb08e5bfadf8e2e1cc19f6`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5212	24224 bytes
`font_01_sfnt_off000088fe.bin` `80aa601e39d75fb74aea55068656967f8eb3655b97589a2d3c4253cef7ecc220`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88FE	18056 bytes

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