PDF malware analysis — malicious · 751df9809e223463

MALICIOUS

PDF

34.1 KB Created: 2021-07-09 14:11:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 4b1946b4aac90a9a73c9c13c30eba096 SHA-1: 4ed4b43b1c0ccffd44f5a7ae9a46160e9c195f6e SHA-256: 751df9809e223463237582342de225a097f64d83d44b43ad08dfc4ba47b4615e

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 0.9980

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 http://netcdn.tw/app/406889139/free-spins-from-coin-master-game-hack PDF link annotation
- https://www.cgalgeria-dubai.com/userfiles/files/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/roblox-svg-free_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/minecraft-116-1-download_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/roblox-free-robux-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-robux-no-download_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/cheats-in-wolves-life-3-roblox_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/get-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-roblox-accounts-v3rmillion_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/get-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_002_off00002f73.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2F73	22628 bytes
SHA-256: `3937336347cc08280fc3b9c525e0352e469444c35f68c2610050e4d90cdf5460`
`font_01_sfnt_off00006209.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6209	18432 bytes
SHA-256: `65a21218908e78d3b3e13bb6de659cda5883429e2feafaff43c4666217260e5f`

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