PDF malware analysis — malicious · 24840078c8afddeb

MALICIOUS

PDF

45.9 KB Created: 2021-06-10 23:57:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: e585c0d71ef404c21c0f0dcdbe3fa6a8 SHA-1: 99720dbffd451c4a1607fa1fed65a5100c5e38f7 SHA-256: 24840078c8afddeb530f98f09b7d3488fefffa8de73d262a6d06b8a88aa693bb

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 0.9864

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-helicopter-free-2021-game-hack PDF link annotation
- https://www.nara.org.uk/uploads/files/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/tiktok-app-install-free-jio-phone_GM835599320.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/minecraft-free-download_GM479516143.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/roblox-hack-game_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-mod-apk-unlimited-spin-download-free-full-version_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_004_off00005432.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5432	25916 bytes
SHA-256: `e748fa3491f6974fef9a788c8b26d42852ce74a3f4c611e6930308942d7210aa`
`font_01_sfnt_off00008fa6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FA6	18748 bytes
SHA-256: `c2eccc20cde61fa57256d4911bccbc30b79fa8652c88d37746dc98df999a8897`

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