PDF malware analysis — malicious · 917f6648faa5de18

MALICIOUS

PDF

44.4 KB Created: 2021-06-07 08:40:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 9017d6e9dd1694e20d4a3df18b5d4fea SHA-1: 026cf69098731bc123de9aaf85e8035f44ae5c9b SHA-256: 917f6648faa5de18da9889754d87ccd4d60b4460b5362f5e43d38eeb2fb1617d

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.tw/app/431946152/roblox-free-straight-face-game-hack PDF link annotation
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-robux-live_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-roblox-executor_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-60-spins_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/minecraft-free-install_GM479516143.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/gain-robux_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/tiktok-free-nose-job_GM835599320.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/hacks-for-minecraft-windows-10_GM479516143.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
`font_00_sfnt_off00005206.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5206	24268 bytes
SHA-256: `28f6f36f4f1cf8c66ec008a7fedc7c88996f4240b4a548dcf39de96834a09513`
`font_01_sfnt_off0000894f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x894F	18856 bytes
SHA-256: `bef1fd7029baa1c913fcfaf7227bc6cbc01b31e3e5e19478465c2b3c52f470fd`

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