PDF malware analysis — malicious · e3158f926d063b62

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 11:14:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 36bbc1d748f3a264525e59a4d2e00ef8 SHA-1: 31f2452ddd066782433dd38e053baab2d36e6d4f SHA-256: e3158f926d063b62aa8148e31025561f0396924efb5ac0d740742155659383a8

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which are presented as download opportunities for game hacks and cheats. The heuristic PDF_SEO_LINK_FARM indicates a link farm structure, and the ML_NYX_PDF_MALICIOUS model strongly suggests malicious intent. The primary IOC is the initial URL http://netcdn.tw/app/431946152/robuxmatchcon-game-hack, which likely serves as a gateway to further malicious content.

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/robuxmatchcon-game-hack
- https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/get-robux-free-and-legit_GM431946152.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-free-spin-app-apk_GM406889139.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-card-collection-hack-2021_GM406889139.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-game-for-pc-free-download_GM406889139.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/roblox-free-robux-generator-no-human-verification_GM431946152.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/best-free-building-games-in-roblox_GM431946152.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-get-gamepasses-on-roblox-for-free_GM431946152.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/get-free-robux-no-fike_GM431946152.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/roblox-free-hair-generator_GM431946152.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/promo-code-for-pokemon-go-free_GM1094591345.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/free-premium-roblox_GM431946152.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/real-coin-master-free-spins_GM406889139.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/spin-coin-master-hack_GM406889139.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-monster_GM406889139.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-get-free-robux-for-kids_GM431946152.pdf
- https://www.soil2soul.ae/uploaded_files/userfiles/files/roblox-hacker-skin_GM431946152.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_off00002f26.bin` `2b4d7b1fb36be401c04a79c148af1ae652dd2e08c34e0a43b64c016c52890fdf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F26	22604 bytes
`font_01_sfnt_off00006193.bin` `22fb853357d700a883506443e03244379ebe89dfe763389f41fb0df375e68649`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6193	19084 bytes

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