PDF malware analysis — malicious · 781e818eea802d7d

MALICIOUS

PDF

45.1 KB Created: 2021-05-13 05:43:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: a9282464d761a11657407cdb20086979 SHA-1: c648c97f9b5e77232c0535e2e5c1f8bbccb026cd SHA-256: 781e818eea802d7db2915cfd1c28266011b5972ba73e84c8c9d641a97a010984

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm or redirection scheme. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the presence of numerous external URLs and the heuristic indicating a 'link farm' strongly suggests the document is designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9621

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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/479516143/classic-minecraft-net-hacks-game-hack
- https://quatangphongthuy.vn/upload/UploadFiles/files/free-spin-coin-master-online_GM406889139.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/hack-coin-master-pc_GM406889139.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/hack-coin-master-iphone_GM406889139.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/how-to-make-free-robux_GM431946152.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/free-robux-without-downloading-apps_GM431946152.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/how-do-you-get-robux-on-roblox_GM431946152.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/coin-master-free-spins-heaven_GM406889139.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/free-apk-mods-coin-master_GM406889139.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/how-do-we-get-free-robux_GM431946152.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/coin-master-free-coins-and-spins-group_GM406889139.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/free-robux-no-verification-needed_GM431946152.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/202100-free-spins-coin-master_GM406889139.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/how-to-get-free-robux-promo-codes_GM431946152.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/get-free-robux-today_GM431946152.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/how-do-u-hack-roblox_GM431946152.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/offers-for-robux_GM431946152.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/hack-robux_GM431946152.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/coin-master-free-spin-app-reviews_GM406889139.pdf
- https://quatangphongthuy.vn/upload/UploadFiles/files/how-to-get-robux-for-free-2021_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004d71.bin` `02245be47cce0df1f821f3fb7b797c1c229b1048c02e5f9e589f4d7923aa9154`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D71	24244 bytes
`font_01_sfnt_off000084c0.bin` `7a6009a29904a1e43c1b61f460ad508be19b75cbf4482696d675ea73126cebb2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84C0	3188 bytes
`font_02_sfnt_off00008f43.bin` `06eb0692cb0ff670c8084f221f19fc536b6b0c4a84b00058b05a05adc7fae17c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F43	17812 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.