PDF malware analysis — malicious · 997509919d71a86c

MALICIOUS

PDF

45.6 KB Created: 2021-06-07 05:24:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 2dc0af1c0f9cc1dee2b6cb9d30b7423f SHA-1: dc864220a8643ddc7a854e51e806946f07d30cef SHA-256: 997509919d71a86c3f444d6022c9add121d047f5d293534e063843fa867a7bc7

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/how-do-i-hack-roblox-to-give-me-robux-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/7-year-old-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-roblox-templates_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/google-roblox-games_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
- https://rblx.landIn 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_off00004e0e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4E0E	27872 bytes
SHA-256: `f8c27009e47919ca976fd4b9618e75e37b558e85637224282c259dde309e1374`
`font_01_sfnt_off00008d2b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D2B	19084 bytes
SHA-256: `7c68ef680b2b184d833e7c7256d3da657381f01e37e93244d6cb4e72925c8f91`

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