PDF malware analysis — malicious · 547cd789ed847cef

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 00:14:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: a54c4ad284b0e808419c059ed95db08f SHA-1: d77a431e829f96001727905331b8af42fccc6895 SHA-256: 547cd789ed847cef3c596f640bf088a8a1f09a86182f2d3f09030e02d2960df3

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous external links and a link farm, suggesting it is designed to redirect users to malicious websites. The document body and extracted URLs indicate a lure for game-related hacks and cheats, likely to distribute malware. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-robux-hack-download-2021-game-hack PDF link annotation
- https://www.tw-storage.com.tw/upload/files/hack-to-get-20210-robux-2021_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-unused-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/roblox-hack-download-2021_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/how-do-you-hack-somebody-in-roblox_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/how-to-hack-and-become-higher-rank-roblox-d-day_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-free_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/roblox-is-being-hacked-chaos-washers_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.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
`font_00_sfnt_off00002f8c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F8C	21992 bytes
SHA-256: `1796eb6539b653861dbcd782103f830caedf221b53e9f3a2cf6cf46478046159`
`font_01_sfnt_off00006041.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6041	19704 bytes
SHA-256: `048c3d751bdf7eddacc77609b20d609ec4b921f92be3ec4f2c3cbc7e00da5869`

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