PDF malware analysis — malicious · 1f9e71ea41689423

MALICIOUS

PDF

48.1 KB Created: 2021-05-14 03:01:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: c001cb910d7f27f2faaf1f402267336f SHA-1: 91dcc4ea42b70c0ed6767393866197b32e79cc98 SHA-256: 1f9e71ea4168942368ec03079b4a47933e6f703c0c6f237256138b5fd8737869

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 0.8715

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.xyz/app/431946152/real-free-robux-generator-game-hack PDF link annotation
- https://stroyzakazremont.ru/images/how-to-earn-robux_GM431946152.pdfIn PDF document text
- https://stroyzakazremont.ru/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
- https://stroyzakazremont.ru/images/coin-master-hack-ios_GM406889139.pdfIn PDF document text
- https://stroyzakazremont.ru/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://stroyzakazremont.ru/images/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
- https://stroyzakazremont.ru/images/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
- https://stroyzakazremont.ru/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://stroyzakazremont.ru/images/roblox-avatar-tester_GM431946152.pdfIn PDF document text
- https://stroyzakazremont.ru/images/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
- https://stroyzakazremont.ru/images/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdfIn PDF document text
- https://stroyzakazremont.ru/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
- https://stroyzakazremont.ru/images/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
- https://stroyzakazremont.ru/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
- https://stroyzakazremont.ru/images/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
- https://stroyzakazremont.ru/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
- https://stroyzakazremont.ru/images/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
- https://stroyzakazremont.ru/images/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
- https://stroyzakazremont.ru/images/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
- https://stroyzakazremont.ru/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
- https://stroyzakazremont.ru/images/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off000049bc.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49BC	25832 bytes
SHA-256: `2988fc7b529d7f2224d79c75ad176c761d1332908633b2447c3249ee40af6ade`
`font_01_sfnt_off000084f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84F3	2820 bytes
SHA-256: `d88f25cfe237a714f996150a11dd8a058f0f7c3e9d1ae91c17b46c10409b6c0b`
`font_02_sfnt_off00008e82.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E82	2816 bytes
SHA-256: `4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f`
`font_03_sfnt_off00009893.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9893	18420 bytes
SHA-256: `14d46e1fdea56b33fc0f11521403768098913a132f51569f9b7a46a3ad47c201`

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