PDF malware analysis — malicious · 82444db4612a0988

MALICIOUS

PDF

45.6 KB Created: 2021-06-11 00:54:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: cf25edc86bdd765a60dc9691f9040862 SHA-1: fd9420ce77ce4c6c025af1bdfeb1ca88390283b4 SHA-256: 82444db4612a0988ed5b93d1bc022aa8014a55a476430be446478c212ff7783d

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which are hosted on domains associated with SEO link farms. The primary URL, https://netcdn.tw/app/431946152/proxy-download-roblox-hack-game-hack, suggests a lure for downloading game-related exploits or cheats. The ML classifier also flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/proxy-download-roblox-hack-game-hack
- http://perpus.unpam.ac.id/repository/hack-de-coin-master_GM406889139.pdf
- http://perpus.unpam.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
- http://perpus.unpam.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdf
- http://perpus.unpam.ac.id/repository/roblox-free-robux-no-verification_GM431946152.pdf
- http://perpus.unpam.ac.id/repository/free-robux-groups-2021_GM431946152.pdf
- http://perpus.unpam.ac.id/repository/where-to-get-free-robux_GM431946152.pdf
- http://perpus.unpam.ac.id/repository/free-robux-description_GM431946152.pdf
- http://perpus.unpam.ac.id/repository/how-to-cheat-in-roblox-pet-simulator_GM431946152.pdf
- http://perpus.unpam.ac.id/repository/coin-master-free-soins_GM406889139.pdf
- http://perpus.unpam.ac.id/repository/how-to-get-free-minecraft-skins_GM479516143.pdf
- http://perpus.unpam.ac.id/repository/coin-master-hack-without-verify_GM406889139.pdf
- http://perpus.unpam.ac.id/repository/free-coins-coin-master-ios_GM406889139.pdf
- http://perpus.unpam.ac.id/repository/free-robux-no-scam-no-hack_GM431946152.pdf
- http://perpus.unpam.ac.id/repository/coin-master-hack-2021-no-human-verification_GM406889139.pdf
- http://perpus.unpam.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdf
- http://perpus.unpam.ac.id/repository/coin-master-free-spin-daily-bonus_GM406889139.pdf
- http://perpus.unpam.ac.id/repository/free-minecraft-capes-no-mods_GM479516143.pdf
- http://perpus.unpam.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdf
- http://perpus.unpam.ac.id/repository/minecraft-for-free-games_GM479516143.pdf
- http://perpus.unpam.ac.id/repository/25-free-spins-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_004_off00005086.bin` `ff35025d2113aa09ea622b98dc5a29a9dd72037c2c4e28ad94a4fec4a9f4dd39`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5086	26492 bytes
`font_01_sfnt_off00008d52.bin` `d5ba41eb51a42b21b9ed34ef324447b4ed3a79504df1b2f6af7c64f626205697`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D52	19020 bytes

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