PDF malware analysis — malicious · ff7fc4aeda447054

MALICIOUS

PDF

36.0 KB Created: 2021-06-27 16:50:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 370400b690b0dcaee98b574598451a9d SHA-1: 1cf8973e685c7142e8257e7b6d5f18b3ad2dcd86 SHA-256: ff7fc4aeda4470548eae481929a2fc8710fe3e39490c35b9a64fc5872d480372

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
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.co/app/431946152/infinite-robux-hack-game-hack PDF link annotation
- https://www.sarsen.net/uploads/files/files/infinite-robux-hack-no-verification_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/roblox-g_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/master-coins-free_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/best-hack-on-roblox_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/getbucks-me-robux-free_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-do-u-get-robux-free_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/vpn-for-roblox-hacking_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/tiktok-free-invitation_GM835599320.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/roblox-hack-2021-free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-get-free-admin-in-every-roblox-game_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/roblox-vheicle-simulator-hacks_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/roblox-how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-roblox-legaly_GM431946152.pdfIn PDF document text
- https://www.roblox.com/my/tasksIn 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_off00003380.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3380	23348 bytes
SHA-256: `f5017198be8f9c34da5c9726d3a5637811cd682776c17efb51c5a3b7bd7671ce`
`font_01_sfnt_off00006826.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6826	18948 bytes
SHA-256: `5dbc8ab671563fa2ca2d141c5967afe0445bcca2b3072bf90b71123d8d369128`

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