PDF malware analysis — malicious · f37e360fd1e20012

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 22:10:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 8d8eaf52b412e2a6a78a4e026943eca0 SHA-1: 6ce1ab6d1d38f6023a85c2a0a8241dbc31290e8d SHA-256: f37e360fd1e200129d3ecf2beb2b657c4b81873b6a138bada76d9a2dc5f02a7f

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains numerous embedded URLs and a call-to-action phrase, attempting to lure the user into downloading a file by promising in-game currency. The ML classifier and PDF link farm heuristics strongly indicate malicious intent, likely to deliver a second-stage payload.

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/earn-robux-now-game-hack
- http://library.ulb.ac.id/repository/roblox-hack-no-virus-download_GM431946152.pdf
- http://library.ulb.ac.id/repository/how-to-play-roblox-for-free_GM431946152.pdf
- http://library.ulb.ac.id//repository/get-me-free-robux_GM431946152.pdf
- http://library.ulb.ac.id/repository/cheat-roblox-adopt-me_GM431946152.pdf
- http://library.ulb.ac.id/repository/free-roblox-hats-surveys_GM431946152.pdf
- http://library.ulb.ac.id/repository/coin-master-game-free-download_GM406889139.pdf
- http://library.ulb.ac.id/repository/pasos-para-hackear-coins-master_GM406889139.pdf
- http://library.ulb.ac.id/repository/roblox-hack-to-get-robux-without-human-verification_GM431946152.pdf
- http://library.ulb.ac.id/repository/roblox-polyguns-crate-teleport-hack_GM431946152.pdf
- http://library.ulb.ac.id/repository/free-girl-face-in-roblox_GM431946152.pdf
- http://library.ulb.ac.id/repository/how-to-hack-roblox-games-on-pc_GM431946152.pdf
- http://library.ulb.ac.id/repository/can-you-get-banned-on-roblox-for-using-cheat-engine_GM431946152.pdf
- http://library.ulb.ac.id/repository/tiktok-free-online_GM835599320.pdf
- http://library.ulb.ac.id/repository/how-to-become-a-builders-club-on-roblox-for-free_GM431946152.pdf
- http://library.ulb.ac.id/repository/how-to-get-free-admin-in-your-own-roblox-place_GM431946152.pdf
- http://library.ulb.ac.id/repository/how-to-hack-any-account-on-roblox-2021_GM431946152.pdf
- http://library.ulb.ac.id//repository/free-coins-on-coin-master_GM406889139.pdf
- http://library.ulb.ac.id/repository/stickmasterluke-free-robux-obby-link_GM431946152.pdf
- http://library.ulb.ac.id/repository/free-card-collection-in-coin-master_GM406889139.pdf
- http://library.ulb.ac.id/repository/follow-bor-roblox-hack_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_off000031cf.bin` `13ae8e8f9b38163c0584513c5474834f2a23c032567e77da4cd5fe3cb5d563bf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31CF	22668 bytes
`font_01_sfnt_off0000648b.bin` `ad9d788a26765a58da61a35e1cf8ac4777a7c6bf95241a2670242caf96161301`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x648B	18716 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.