PDF malware analysis — malicious · 20c8bee1c745a526

MALICIOUS

PDF

49.3 KB Created: 2021-06-03 05:09:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: a4f651906b311c76568271b213590a5d SHA-1: deee049dba9256069e12f5557d9073cfdeddb6ae SHA-256: 20c8bee1c745a5261e71c7c90d671f5823a2b6519651a0ac7bad6ba1302e1daf

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/431946152/bloxawards-com-earn-free-robux-game-hack PDF link annotation
- https://www.takathmanduhotel.com/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/wurst-115-2_GM479516143.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/free-shields-coin-master_GM406889139.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/robux-download_GM431946152.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/earn-robux-today_GM431946152.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/free-robux-site_GM431946152.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/free-links-coin-master_GM406889139.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
- https://www.takathmanduhotel.com/userfiles/files/coin-master-hack-xyz_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_off000052e4.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x52E4	25732 bytes
SHA-256: `1ac224c52d14cdc2def2c88c06658d4e84ed688aa61996dc503e04a29ec7e0c1`
`font_01_sfnt_off00008eb2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8EB2	2940 bytes
SHA-256: `eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a`
`font_02_sfnt_off000098c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x98C2	20052 bytes
SHA-256: `c9bd15ba40b7b3418e8ba12735ec311f9f475f6ba18ce4972ae8854d07104096`

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