PDF malware analysis — malicious · d4cdf6d0812597b1

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 03:50:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 857095fd644996e802ccb11de71dd4bd SHA-1: a148e025be896e5e156edcbe96945d13d7fec2d2 SHA-256: d4cdf6d0812597b11cd0528439685db9ef01533ec26d65d39ed3b93ebf161531

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on domains associated with SEO link farms. The primary URL, http://netcdn.tw/app/479516143/minecraft-bedrock-free-download-game-hack, suggests a lure for downloading game cheats or hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button heuristic further supports a malicious intent to trick users into downloading potentially harmful files.

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.tw/app/479516143/minecraft-bedrock-free-download-game-hack
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/codes-to-get-free-robux_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/new-obby-that-gives-free-robux_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-get-free-robux-no-verification_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/app-hack-online-roblox-robux_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-hack-version-2021_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-rare-cards-for-coin-master-christmas_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-robux-no-verification-needed_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/roblox-phantom-forces-anti-cheat_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/minecraft-hacks-list_GM479516143.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/roblox-script-hack_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/get-free-robux-easy-simple_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/give-me-robux-now_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/good-roblox-hack-exacuter_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-free-spins-promo-code_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-spin-link-for-coin-master-game_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/roblox-free-clothes-codes_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-free-coins-2021_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-hack-tool-india_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000031b5.bin` `5425dbc41528ebf2ce9b5b27798a18620d426b4c7a12ab73e72f3a7080f1dbdb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31B5	22000 bytes
`font_01_sfnt_off000061d0.bin` `748ffd9e178d60222e66fae921696cfc4ef08c5774789f044573331dfc570242`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61D0	18964 bytes

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