PDF malware analysis — malicious · 8bec06f6d227a83e

MALICIOUS

PDF

35.4 KB Created: 2021-06-19 01:36:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: f48d71706c9db2ca779c63ca11d4bf85 SHA-1: 037918f38f93946c476c00f88cefdc723ee46f19 SHA-256: 8bec06f6d227a83ea4d63671a08059c0cde5f8dda59fbc4fe294cb785aa90321

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/hoot-join-a-roblox-group-for-free-game-hack PDF link annotation
- https://foc.vn/public/upload/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/roblox-account-taker_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/robux-codes-unused-free-robux_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/roblox-como-tener-robux-gratis-2021-octubre-nuevo-hack_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/roblox-bux-free_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/pubg-uc-60_GM1330123889.pdfIn PDF document text
- https://foc.vn/public/upload/files/no-human-verification_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/pubg-uc-quiz_GM1330123889.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_002_off00002ec7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2EC7	23592 bytes
SHA-256: `5f207e82301dc78aa956df43f46990f2e20b31d594e9d762e1b4c29aeb66f74f`
`font_01_sfnt_off0000646c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x646C	19356 bytes
SHA-256: `79d7eda16358648a6f557e499a07831e40826683abe5d9f657cd1e61f2e297f7`

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