PDF malware analysis — malicious · 8c7158e466edb944

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 18:31:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 9fa59f651681103b035335d94eed0fe1 SHA-1: 6cf70a77c903ea68a55de604fdf5332517f6c764 SHA-256: 8c7158e466edb94419b7c41d226ee75bd5a1422d4d6393d71e630dfaeaf2c957

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous embedded links, many of which are part of a link farm designed to attract users searching for game hacks and cheats. The primary URL, http://netcdn.tw/app/431946152/roblox-free-robux-com-game-hack, suggests a lure for Roblox-related exploits. The ML classifier and the PDF_SEO_LINK_FARM heuristic strongly indicate malicious intent, likely to direct users to malicious websites or download malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9824

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/roblox-free-robux-com-game-hack PDF link annotation
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/is-it-illegal-to-hack-in-roblox-against-a-streamer_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/level-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-coin-master-hacks_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/game-toolbox_GM479516143.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-account-for-roblox-with-robux_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-money-hack-on-roblox-car-simulator_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/pokemon-go-free-mewtwo-hack_GM1094591345.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/tiktok-free-tiktok_GM835599320.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-roblox-coin-generator_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/roblox-bux-free_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00002c36.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2C36	22536 bytes
SHA-256: `0b6df23099522c574ace4463acd872a8fb13f3e0f426bda5cb96a8934487c910`
`font_01_sfnt_off00005e8a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E8A	19052 bytes
SHA-256: `3ade0644b03576c953d7fa07027ec2051297089046835a88cadcb08e5c593426`

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