PDF malware analysis — malicious · e20fa52d6bddcf50

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 15:53:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 6c9f94bf0502cd1a4c05fd58b12d33f3 SHA-1: b6c59cbc562f6d1962cd16a8000a0f7d6ff2f94f SHA-256: e20fa52d6bddcf500e92a1ad6d876ea400050125450c58c7d0e9dbe40fa3dece

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 0.9865

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.online/app/431946152/justine-whitaker-slides-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-money-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/robux-survey_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-roblox-account-generator_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/is-there-any-way-to-get-free-robux_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_004_off000052dd.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x52DD	24900 bytes
SHA-256: `6c0b79970481aca0befe3ccb06e76c85a76c4fef45384e6d036a2cd4750386f1`
`font_01_sfnt_off00008b43.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B43	18740 bytes
SHA-256: `b6ce6681067b2d109aaffbefa437e2d8e5cab2e8a66c3adeddbdf014d53c8be4`

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