PDF malware analysis — malicious · c80a28dd7f1fa5de

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 16:13:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 424931a9a5535ebf342340e0cfef4c3d SHA-1: cd7b3a0a669fa0cd994942cf0b3dd56143c57d08 SHA-256: c80a28dd7f1fa5de91c899ecd6ebafb0d4d604ba6687959f3a11f4b3382ca664

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/406889139/coin-master-free-spins-app-for-iphone-game-hack PDF link annotation
- https://www.andrology.co.uk/uploads/files/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-robux-accounts_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-robux-apk_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/get-robux-com_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/easy-roblox-today_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/roblox-free-robux-com_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_off000052db.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x52DB	25004 bytes
SHA-256: `90e95f39f8fa444e56ddfcba6d2666d5e6fd3df2ec058e5cad943d70e20f210b`
`font_01_sfnt_off00008b38.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B38	18052 bytes
SHA-256: `4aba056016aeb65aeba62e03d7234ea924a4b970c64610ba6e784186ab2969a1`

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