PDF malware analysis — malicious · 027acd7c1c68f9ea

MALICIOUS

PDF

48.4 KB Created: 2021-06-08 23:01:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 8fa531e8c53aee9652e30100e842d6a9 SHA-1: 6aabc2b53e291cca5c7c50f2bf7f1c7f9738abf2 SHA-256: 027acd7c1c68f9ea7e6bf6f1041238804716fe3ef0228b31ff1ea8b11e352853

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous external links, many of which point to other PDF files hosted on similar domains, suggesting a link farm designed to distribute malware or facilitate scams. The document's content and the presence of a 'download' button lure further support this malicious intent. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/how-to-do-speed-hack-on-roblox-mad-paintball-game-hack
- https://www.hearcolors.com.mx/img/blog/files/raindrop-roblox-exploit-free_GM431946152.pdf
- https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-pro-gamers_GM406889139.pdf
- https://www.hearcolors.com.mx/img/blog/files/free-robux-generator-com-roblox-hack_GM431946152.pdf
- https://www.hearcolors.com.mx/img/blog/files/moonactive-coin-master-free-spins-link_GM406889139.pdf
- https://www.hearcolors.com.mx/img/blog/files/coin-master-free-coins-and-spins-today_GM406889139.pdf
- https://www.hearcolors.com.mx/img/blog/files/free-robux-no-email_GM431946152.pdf
- https://www.hearcolors.com.mx/img/blog/files/download-coin-master-apk-hack_GM406889139.pdf
- https://www.hearcolors.com.mx/img/blog/files/coin-master-cheat-engine-hack_GM406889139.pdf
- https://www.hearcolors.com.mx/img/blog/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
- https://www.hearcolors.com.mx/img/blog/files/hack-coin-master-apk-32-download_GM406889139.pdf
- https://www.hearcolors.com.mx/img/blog/files/free-robux-pins_GM431946152.pdf
- https://www.hearcolors.com.mx/img/blog/files/how-to-hack-roblox-jailbreak_GM431946152.pdf
- https://www.hearcolors.com.mx/img/blog/files/minecraft-java-edition-free-download_GM479516143.pdf
- https://www.hearcolors.com.mx/img/blog/files/coin-master-free-spin-and-coin_GM406889139.pdf
- https://www.hearcolors.com.mx/img/blog/files/minecraft-hack-2021_GM479516143.pdf
- https://www.hearcolors.com.mx/img/blog/files/free-robux-roblox-promo-codes_GM431946152.pdf
- https://www.hearcolors.com.mx/img/blog/files/how-you-get-free-robux_GM431946152.pdf
- https://www.hearcolors.com.mx/img/blog/files/coin-master-free-spins-only_GM406889139.pdf
- https://www.hearcolors.com.mx/img/blog/files/how-do-we-get-free-robux_GM431946152.pdf
- https://www.hearcolors.com.mx/img/blog/files/ways-to-get-free-robux_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000052f8.bin` `90b58c13bf93ade0a0b1514f95e4b340e921f610e23d2532ee297a038ce0ffed`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x52F8	25520 bytes
`font_01_sfnt_off00008d5a.bin` `baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D5A	2844 bytes
`font_02_sfnt_off0000971b.bin` `23ba82c6fa304c72368ffe187297e4b561e4ca098ad08e9e58231ee1f8e75c3c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x971B	19440 bytes

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