PDF malware analysis — malicious · 7f6c7dbb4a23db26

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 21:23:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 4ed713aaad9b4332deea4ef976eb6af4 SHA-1: 5e7db026d761e86f2aaa350c8c35e5460c954e6c SHA-256: 7f6c7dbb4a23db2632bb1408ffe30c40b3e0b36d128fa1545dc1e3ce0667a040

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs and a prominent call-to-action lure for 'Free Robux', indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests it's designed to redirect users to download potentially harmful content. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 0.9984

Heuristics 4

Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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/free-robux-no-verify-game-hack
- http://lib.uho.ac.id/library/repository/coin-master-online-hack-no-survey-no-password_GM406889139.pdf
- http://lib.uho.ac.id/library/repository/free-spins-coin-master-2021-today_GM406889139.pdf
- http://lib.uho.ac.id/library/repository/castle-black-free-to-take-roblox_GM431946152.pdf
- http://lib.uho.ac.id/library//repository/coin-master-key-free-spin_GM406889139.pdf
- http://lib.uho.ac.id/library/repository/hack-the-game-coin-master_GM406889139.pdf
- http://lib.uho.ac.id/library//repository/minecraft-free-download-android_GM479516143.pdf
- http://lib.uho.ac.id/library//repository/how-can-u-get-free-robux_GM431946152.pdf
- http://lib.uho.ac.id/library/repository/how-to-get-minecraft-java-for-free_GM479516143.pdf
- http://lib.uho.ac.id/library//repository/free-robux-earn_GM431946152.pdf
- http://lib.uho.ac.id/library/repository/is-roblox-free-on-nintendo-switch_GM431946152.pdf
- http://lib.uho.ac.id/library/repository/coin-master-free-snacks-link_GM406889139.pdf
- http://lib.uho.ac.id/library//repository/bloxawards-com-earn-free-robux_GM431946152.pdf
- http://lib.uho.ac.id/library/repository/windows-10-minecraft-hacks_GM479516143.pdf
- http://lib.uho.ac.id/library/repository/minecraft-pe-apk-free-download_GM479516143.pdf
- http://lib.uho.ac.id/library//repository/spins-for-coin-master_GM406889139.pdf
- http://lib.uho.ac.id/library//repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
- http://lib.uho.ac.id/library//repository/coin-master-hack-without-human-verification-2021_GM406889139.pdf
- http://lib.uho.ac.id/library//repository/free-roblox-clothes-and-hair_GM431946152.pdf
- http://lib.uho.ac.id/library//repository/rbx-gg-free-robux_GM431946152.pdf
- http://lib.uho.ac.id/library//repository/free-robux-live_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_off00003144.bin` `290dac61fe1c3ff3e706b49d8b1da9cea4642b3eae783a080d8ba45762950589`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3144	22352 bytes
`font_01_sfnt_off000062e2.bin` `c82ca362f7929c521a15e373c099d5f63e765e94f5114feac3ee2b66231d0241`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62E2	19148 bytes

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