PDF malware analysis — malicious · f02807d7e90b0e55

MALICIOUS

PDF

48.9 KB Created: 2021-06-03 15:53:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 920a58d694b282c96e0dd7a50bab9572 SHA-1: 1812ff653604846a1d6821ccbf633fb678c1fa0e SHA-256: f02807d7e90b0e55ee18009991e6b7e2f19ed3bfc42f2a52ea1a541f652c59d5

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 0.9796

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/406889139/how-to-get-free-spins-for-coin-master-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-hair-for-free_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-homepage_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005543.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5543	26956 bytes
SHA-256: `4dedc794e8217548739b77399caac7028fecddd3a8ee8e9b25a73c16449d8163`
`font_01_sfnt_off00009384.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9384	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00009d35.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9D35	18052 bytes
SHA-256: `3cfae0e628493b06a11893ba870a091d0c1d4835c1ebffdd70b8f2a1c7d637a9`

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