PDF malware analysis — malicious · 431e6171d7b84576

MALICIOUS

PDF

42.1 KB Created: 2021-05-12 06:11:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: cb3c0d79f0fbb0ce8f5893b98e7145b3 SHA-1: 213405524ff339eebe3bd7f789162afee364916a SHA-256: 431e6171d7b8457626795f1267bccc5b96d77d90ad8f652c4037eb7ae4860499

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/coin-master-daily-free-spins-and-coins-game-hack PDF link annotation
- http://greasley.website/images/wurst-hacked-client_GM479516143.pdfIn PDF document text
- http://greasley.website/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
- http://greasley.website/images/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
- http://greasley.website/images/easy-roblox-today_GM431946152.pdfIn PDF document text
- http://greasley.website/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://greasley.website/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
- http://greasley.website/images/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
- http://greasley.website/images/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
- http://greasley.website/images/my-roblox-avatar_GM431946152.pdfIn PDF document text
- http://greasley.website/images/free-robux-real-working_GM431946152.pdfIn PDF document text
- http://greasley.website/images/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://greasley.website/images/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
- http://greasley.website/images/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://greasley.website/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
- http://greasley.website/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
- http://greasley.website/images/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
- http://greasley.website/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
- http://greasley.website/images/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
- http://greasley.website/images/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
- http://greasley.website/images/coin-master-app_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_off000048c1.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48C1	25548 bytes
SHA-256: `f1abd347bc5c0872f9cdc485a4174d977c35a1a8a33b6bcd264cd2817d9d7a81`
`font_01_sfnt_off0000816c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x816C	18480 bytes
SHA-256: `323fea871d3154f9ddf991b22fd859b77165b4ee4e2d03de0fe4666202988bbb`

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