PDF malware analysis — malicious · a76155703714209f

MALICIOUS

PDF

34.9 KB Created: 2021-07-09 00:02:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 732ad8265e6c7adef89d0b0d4954b1c1 SHA-1: 5f30450a939e8c2bd1cd5ededb3306ddee7cdb7f SHA-256: a76155703714209f91ff79fe72d2a9b916a5d34196587ec01af377e7bce29441

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically for 'Coin Master', directing users to a suspicious URL. This URL, http://netcdn.tw/app/406889139/coin-master-hack-activegamer-game-hack, is likely a redirector for malware or a phishing page. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent to lure users to potentially harmful content.

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.tw/app/406889139/coin-master-hack-activegamer-game-hack PDF link annotation
- https://www.gpn-revalidation.co.uk/uploads/files/files/free-police-shirts-for-roblox_GM431946152.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/www-rbxhut-com_GM431946152.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/roblox-top_GM431946152.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/pubg-uc-qatar_GM1330123889.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/give-free-robux_GM431946152.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/free-robux_GM431946152.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/coin-master-hack-fast-org_GM406889139.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/pokemon-go-free-shiny_GM1094591345.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/john-doe-roblox-hacke_GM431946152.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
- https://www.gpn-revalidation.co.uk/uploads/files/files/roblox-hack-sharder_GM431946152.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_off00002f92.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2F92	23632 bytes
SHA-256: `1d619c56fad27ace2ed473d2c5a056fad6e5033c727c3c264d875448e12e254f`
`font_01_sfnt_off00006547.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6547	18376 bytes
SHA-256: `9071112516a3c1a751db78ff2cf185d6a5c8a1d73babf85370e027775254c109`

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