PDF malware analysis — malicious · 3524c4cf26fcdfec

MALICIOUS

PDF

36.4 KB Created: 2021-07-04 11:41:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 2df63b2242b1ba28881224dd6e343241 SHA-1: 15d270f3ecafdbe1e42f1711f270b05756d90a10 SHA-256: 3524c4cf26fcdfecfd653ebe4cadce225eafdcef112bb144292f45146bc9342d

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was generated by wkhtmltopdf and contains numerous embedded URLs, forming a link farm. The document body and extracted URLs suggest a lure for users seeking game cheats or in-game currency (Robux for Roblox, Coin Master hacks), which is a common social engineering tactic. The presence of external links and the ML classifier's high confidence indicate a malicious intent to redirect users to potentially harmful 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/how-to-get-robux-on-roblox-game-hack PDF link annotation
- https://laokhwanhos.com/ckfinder/userfiles/files/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-hack-robux-and-tix-cheat-tool-youtube_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/ghost-hack-for-roblox_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/boku-no-roblox-remasterd-hack-level-up_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/how-to-download-roblox-ccv3-hack_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-como-tener-robux-gratis-2021-marzo-nuevo-hack-1millon_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-ban_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/hack-coin-master-android_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-roblox-game-card-codes_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/minecraft-ios-mods_GM479516143.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/red-boy-v2-jailbreak-roblox-hack-download_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-gamepasses-for-roblox-op-as-f_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-one-punch-man-cheat-engin_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-free-no-download_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/invisible-hack-roblox-prison-life-withe-cheat-engine_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/minecraft-free-download-mac-full-version_GM479516143.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_off0000356e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x356E	23136 bytes
SHA-256: `9524839cd0e033aee30f21da6f07bfed0ac6706bed90d581647d86fa2fd1b6a7`
`font_01_sfnt_off00006977.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6977	18896 bytes
SHA-256: `96d3b414a238506af4bca1b1ecde2903623354b908f1fec60380700dcce89c10`

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