PDF malware analysis — malicious · fccbe9157a21da5c

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 09:04:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22

MD5: 6457ffa5e47c15530919271aa7ccb604 SHA-1: 8365a4a1b56c9ef7c72ac5c51343aa1ba7789250 SHA-256: fccbe9157a21da5cc46b2678902b2c861dcf87bf1baa8cbdf76548eb0cc26031

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/hack-coin-master-with-lucky-patcher-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/free-roblox-accounts-with-robux-and-obc-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-mod_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/downlaod-roblox-free_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-hack-tickets-net_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/instinct-online-roblox-hack_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/download-coin-master-hack_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-roblox-assassin-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-labeled-cheater-in-roblox-parkour_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-codes-to-get-free-items_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-noclip-hack-jailbreak-outwit_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-minecraft-alt-generator_GM479516143.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_off000032c0.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x32C0	22928 bytes
SHA-256: `cddf903209ef93cc740124bb42af95239043b924e80377e8cea730d0d88533c6`
`font_01_sfnt_off0000665d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x665D	18844 bytes
SHA-256: `8e156f057f70b0626a2a94044e94f4d4176a21a8de5c2b608b5eed643ab4e9eb`

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