PDF malware analysis — malicious · 00b47daa6d071052

MALICIOUS

PDF

45.3 KB Created: 2021-05-16 23:22:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: ca1a6b1fae199d15d3d4793c530ac68f SHA-1: 049df4e592f6f1e81a6c23aba66fcb55d2e3ca47 SHA-256: 00b47daa6d07105285f76b6851c29b279d828284f103358e4eb303e42f5b242d

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 are SEO-optimized and point to other PDF files, indicating a link farm or traffic generation scheme. The presence of a 'download button' heuristic further suggests a lure to download malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9551

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/hack-coin-master-android-2021-game-hack
- https://ceiprevellodetoro.org/images/free-robux-net_GM431946152.pdf
- https://ceiprevellodetoro.org/images/how-do-we-get-free-robux_GM431946152.pdf
- https://ceiprevellodetoro.org/images/spin-free-coin-master_GM406889139.pdf
- https://ceiprevellodetoro.org/images/easy-robux-hack_GM431946152.pdf
- https://ceiprevellodetoro.org/images/roblox-games-with-free-radio_GM431946152.pdf
- https://ceiprevellodetoro.org/images/coinmaster-rewards_GM406889139.pdf
- https://ceiprevellodetoro.org/images/how-to-get-free-robux-instantly_GM431946152.pdf
- https://ceiprevellodetoro.org/images/free-spin-link-coin-master_GM406889139.pdf
- https://ceiprevellodetoro.org/images/twitter-coin-master-free-spins-link_GM406889139.pdf
- https://ceiprevellodetoro.org/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
- https://ceiprevellodetoro.org/images/coin-master-free-coin-and-spin-app_GM406889139.pdf
- https://ceiprevellodetoro.org/images/coin-master-hack-apk-ios_GM406889139.pdf
- https://ceiprevellodetoro.org/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdf
- https://ceiprevellodetoro.org/images/how-to-hack-roblox-2021_GM431946152.pdf
- https://ceiprevellodetoro.org/images/coin-master-free-spin-group_GM406889139.pdf
- https://ceiprevellodetoro.org/images/free-robux-that-actually-works-2021_GM431946152.pdf
- https://ceiprevellodetoro.org/images/hack-coin-master-without-root_GM406889139.pdf
- https://ceiprevellodetoro.org/images/roblox-hack-2021_GM431946152.pdf
- https://ceiprevellodetoro.org/images/coin-master-hack-tool-v1-9-apk_GM406889139.pdf
- https://ceiprevellodetoro.org/images/coin-master-free-card-link-today_GM406889139.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_off00004a48.bin` `8170f6905581975d6aae00ac1bd418a348e1d9a08466da28d1b518f561528439`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A48	24628 bytes
`font_01_sfnt_off00008258.bin` `1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8258	3380 bytes
`font_02_sfnt_off00008e41.bin` `9fbd886436b25eb03f566a14fe39b1cb78edee0ed910026e951b6e8040220874`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E41	18292 bytes

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