PDF malware analysis — malicious · 82195da77351a0aa

MALICIOUS

PDF

42.5 KB Created: 2021-05-16 21:00:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: f769c11b704dbb68ca0b5d183438a075 SHA-1: d4aae6769c3ae319ff2ac345a0c9496ff5f2c0d5 SHA-256: 82195da77351a0aaaba3a91f5a5f28677c37adb09291259e309b45252e52f8bf

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, identified as a link farm, pointing to other PDF files hosted on 'atmos-service.com' and 'netcdn.xyz'. These links are likely intended to lure users into downloading potentially malicious content or visiting phishing sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/431946152/i-need-robux-game-hack
- http://atmos-service.com/images/roblox-free-hair-girl_GM431946152.pdf
- http://atmos-service.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
- http://atmos-service.com/images/minecraft-free-apk-download-016-0_GM479516143.pdf
- http://atmos-service.com/images/oprewards-points-generator_GM431946152.pdf
- http://atmos-service.com/images/is-minecraft-free-on-mac_GM479516143.pdf
- http://atmos-service.com/images/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdf
- http://atmos-service.com/images/how-to-get-spins-for-free-on-coin-master_GM406889139.pdf
- http://atmos-service.com/images/how-to-get-free-robux-without-paying_GM431946152.pdf
- http://atmos-service.com/images/haktuts-coin-master-spins_GM406889139.pdf
- http://atmos-service.com/images/coin-master-hack-spin-ios_GM406889139.pdf
- http://atmos-service.com/images/free-robux-on-phone_GM431946152.pdf
- http://atmos-service.com/images/coin-master-links-for-today_GM406889139.pdf
- http://atmos-service.com/images/coin-master-free-spins-link-october-2021_GM406889139.pdf
- http://atmos-service.com/images/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdf
- http://atmos-service.com/images/coin-master-free-daily-spins-link_GM406889139.pdf
- http://atmos-service.com/images/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdf
- http://atmos-service.com/images/minecraft-maps-pe-free-download_GM479516143.pdf
- http://atmos-service.com/images/are-robux-generators-safe_GM431946152.pdf
- http://atmos-service.com/images/minecraft-114-download_GM479516143.pdf
- http://atmos-service.com/images/ultimate-free-spins-coin-master_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_off0000489b.bin` `857b2795d9eaa51f9c53d39d05e35df1844274f7fd84c060ba9990238c859fd2`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x489B	26332 bytes
`font_01_sfnt_off00008464.bin` `f1ec7b04fe7efc10da220c54b18b8286c95b0450e2bf9e35db279b0a74518d0c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8464	18024 bytes

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