PDF malware analysis — malicious · 6b8b8d5fc0a4ad00

MALICIOUS

PDF

51.8 KB Created: 2021-06-03 08:16:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 76bc8275c3931319fa43ab26e578c436 SHA-1: 29f25898eb276f8ef1fe276552a190939fdd677a SHA-256: 6b8b8d5fc0a4ad00c6583cf0d1f97343d521a5340777cd06152dcad95394a812

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many of which appear to be part of a link farm designed to drive traffic or SEO manipulation. One URL, 'https://netcdn.online/app/406889139/free-spin-and-coin-game-hack', is directly embedded and suggests a lure for game-related cheats or hacks. The presence of a 'download button' heuristic further supports the idea that the document is intended to prompt user interaction leading to external resources. While no scripts were explicitly extracted, the PDF structure and heuristics indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9657

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-spin-and-coin-game-hack
- https://www.yatrikathmandusuite.com/userfiles/files/get-robux-com_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/adopt-me-roblox-hacks_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/free-pet-food-on-coin-master_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-get-free-robux-without-human-verification_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/youtube-how-to-get-free-robux_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/free-robux-no-survey_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/hack-tiktok-fans-free_GM835599320.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/card-hack-for-coin-master_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-free-stuff_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-get-2021-robux-for-free_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/cheats-coin-master-free-spins-and-news_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/daily-free-spins-coin-master_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/www-robux-us_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/google-how-do-you-get-free-robux_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/free-robux-generator-for-roblox-2021_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005179.bin` `d473f8a265e7b822050c5f81db598165bc9ce3b170de72ee596ca322d3ce2a97`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5179	25372 bytes
`font_01_sfnt_off00008b7f.bin` `1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B7F	3380 bytes
`font_02_sfnt_off00009763.bin` `d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9763	7332 bytes
`font_03_sfnt_off0000a97c.bin` `14aa911ad6e5c7047adc26f09c02dee025e58de6207e09974a07acc23cb9456b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA97C	17728 bytes

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