PDF malware analysis — malicious · 649594e453724cb2

MALICIOUS

PDF

34.8 KB Created: 2021-07-08 05:40:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 489a0b67d946b9e5d8d2e1287ea83b68 SHA-1: 9244dcf3d45579f76c0225ea9720214e183acd5e SHA-256: 649594e453724cb2565a99f7a1e588b54861a88744a7f8b040a9634b3a635cc9

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The document contains numerous links to external websites, many of which are presented as PDF files promising hacks and free currency for popular games. The primary URL, http://netcdn.tw/app/431946152/how-to-get-free-robux-easy-game-hack, suggests a lure for obtaining free Robux. The presence of a PDF link farm heuristic and ML classification strongly indicates malicious intent, likely to direct users to phishing or malware distribution sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-get-free-robux-easy-game-hack
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-hack-tuts_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/pokemon-go-windows-free-download_GM1094591345.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-hack-a-minecraft-server_GM479516143.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-free-spins-and-coins-today_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-free-spins-link-today-2021_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/free-coin-master-coins-2021_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/real-minecraft-for-free_GM479516143.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-hack-version-2021-free-download_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/minecraft-java-edition-code-free_GM479516143.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/give-me-free-robux_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/pro-free-spins-coin-master_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/rbl-gg-free-robux_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/toolbox-for-minecraft-pe-ios_GM479516143.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/free-robux-working_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/roblox-help-free-robux_GM431946152.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-coin-master-spin-hack_GM406889139.pdf
- https://www.yatrikathmandusuite.com/userfiles/files/free-spins-on-coin-master-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
`font_00_sfnt_off00003099.bin` `1bd20f8216d42890da27808a6377cdbe2d3215ab086e2de3de9928cc11d0bdcf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3099	22512 bytes
`font_01_sfnt_off00006261.bin` `0d91da27a3fd2071a1294b90674c0de4394c4ddf99a76a86a264892d4088a75d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6261	19164 bytes

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