PDF malware analysis — malicious · 8ff3fedcc84fbf33

MALICIOUS

PDF

44.3 KB Created: 2021-05-14 08:13:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: b1bd24e10745396e89b46f1e7fb0d3eb SHA-1: f5f2f30e928ec91d7e1fd9c07b458960a1a62870 SHA-256: 8ff3fedcc84fbf33f715492ffbc7cc6cd416bb72fca37e229651b9f9ab9dd9a7

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a URL and visual cues suggesting a download lure, specifically for a 'Coin Master Mod Apk'. The ML classifier strongly flagged this PDF as malicious. The presence of a download button heuristic further supports the phishing or scam attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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.xyz/app/406889139/coin-master-mod-apk-unlimited-spin-download-free-full-version-game-hack
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/robux-hack-tools_GM431946152.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-robux-codes-2021_GM431946152.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-stream_GM431946152.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-skins-in-roblox_GM431946152.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-generator-2021-no-survey_GM431946152.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/master-coin-hack-game_GM406889139.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-version-2021-free-download_GM406889139.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-maps-pe-free-download_GM479516143.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-please_GM431946152.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-coin-spin-daily-link-coin-master_GM406889139.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-that-actually-works-2021_GM431946152.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-game-free-download-for-pc_GM406889139.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-robux-page_GM431946152.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/can-you-earn-robux_GM431946152.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/how-do-you-get-free-roblox-money_GM431946152.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-builders-club-free_GM431946152.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-mod-apk-hack_GM406889139.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-thumbnail-maker-free_GM479516143.pdf
- https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-game-free-spin-download_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_003_off00004d1b.bin` `3f0a6d9ddd2b18832cd92f55bf1ceff4178c6387571c24e74ca30f049af03774`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D1B	25172 bytes
`font_01_sfnt_off000087ca.bin` `92ce47a29f6b22b41a3f27f468cf2ba8cb02212e9ac17cc8e0fda8e64716967c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87CA	19356 bytes

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