PDF malware analysis — malicious · 2c5a8ffd5449d152

MALICIOUS

PDF

42.1 KB Created: 2021-05-16 01:23:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 463f5e0c8859cf3043967d3aa96a6912 SHA-1: c052e6542916e2e49eab01aaac699ac618cd1c9f SHA-256: 2c5a8ffd5449d152912c5fb82e6cdce5c2598b19003c28e22912fe2c45e0725e

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 0.9971

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 https://netcdn.xyz/app/406889139/10-free-spins-coin-master-game-hack PDF link annotation
- https://www.polyfin.de/images/coin-master-mod-apk-hack_GM406889139.pdfIn PDF document text
- https://www.polyfin.de/images/roblox-top_GM431946152.pdfIn PDF document text
- https://www.polyfin.de/images/make-free-robux_GM431946152.pdfIn PDF document text
- https://www.polyfin.de/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.polyfin.de/images/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://www.polyfin.de/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.polyfin.de/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.polyfin.de/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.polyfin.de/images/free-2021-robux_GM431946152.pdfIn PDF document text
- https://www.polyfin.de/images/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
- https://www.polyfin.de/images/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.polyfin.de/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
- https://www.polyfin.de/images/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
- https://www.polyfin.de/images/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
- https://www.polyfin.de/images/coin-master-hack-com_GM406889139.pdfIn PDF document text
- https://www.polyfin.de/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
- https://www.polyfin.de/images/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
- https://www.polyfin.de/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
- https://www.polyfin.de/images/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
- https://www.polyfin.de/images/today-coin-master-free-coins-link_GM406889139.pdfIn 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
`stream_003_off00004b1d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B1D	24228 bytes
SHA-256: `6a152b2ec375d7ffd8bcaadb5af2d95fef1db5528afd0bdb2d3fcad12ed08ec4`
`font_01_sfnt_off0000825f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x825F	18164 bytes
SHA-256: `9bc61af2acbda784231945e40c4a4bb5d6810b0d04641be6b37b2cdd3c5b78bc`

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