PDF malware analysis — malicious · 7c7392311511eede

MALICIOUS

PDF

44.2 KB Created: 2021-05-20 02:24:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: fa81caae2066987517b9911c63485c6d SHA-1: e492b8be55b699a2e381df421da536f35cfe7698 SHA-256: 7c7392311511eedefa07eacfae4aa841d41ebad81a4903d975f3c24c4544d9b0

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which appear to be part of a link farm designed to lure users into downloading applications or visiting scam pages. The document body itself contains text and URLs related to game downloads and in-game currency, suggesting a phishing or scamming attempt. The ML classifier also strongly indicated maliciousness.

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 https://netcdn.xyz/app/479516143/minecraft-pe-0.16-0-apk-download-free-game-hack
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/free-spins-on-coin-master-2021-ios_GM406889139.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/coin-master-free-spin-download_GM406889139.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/easy-way-to-get-robux_GM431946152.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/hackear-juego-coin-master_GM406889139.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/coin-master-hack-without-verification-code-2021_GM406889139.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/all-coin-master-spin-link-and-free-download_GM406889139.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/earn-free-robux-on-roblox_GM431946152.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/daily-coin-master-free-spin-link_GM406889139.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/coin-master-spin-link-today_GM406889139.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/roblox36com-free-robux_GM431946152.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/how-to-hack-coin-master-in-pc_GM406889139.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/free-robux-no-human-verification-2021_GM431946152.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/coin-master-fan_GM406889139.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/free-robux-real-working_GM431946152.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/earn-free-robux-today_GM431946152.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/roblox-verification_GM431946152.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/free-coin-master-hacks_GM406889139.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/coin-master-deals_GM406889139.pdf
- https://zephyrtoys.com/assets/ckfinder/userfiles/files/get-2021-free-spins-on-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_off00004e04.bin` `e04bd0e9c577be713cb335e8f185dfab4c1fddd88129247f5799642760f5546c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4E04	25528 bytes
`font_01_sfnt_off00008792.bin` `520ea12fa60618e22dfb92575853af2f045fc875098f6a67670d45663928019c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8792	19300 bytes

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