PDF malware analysis — malicious · 7e98c1fa48fe091c

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 16:42:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 3e3d27ba1f6bd4124c17d6923fb2b413 SHA-1: 8117c2b7d105edeb92493d6088478119f0c09cf6 SHA-256: 7e98c1fa48fe091cda664d91565b74fcc320cf3bb8068d12a37d38255a23cc27

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, many of which are structured as SEO-friendly links to pages promising free in-game currency or items. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm designed to attract users with deceptive content. The primary attack pattern involves luring users to external sites that likely host further malicious content or scams.

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/406889139/coin-master-unlimited-free-spins-game-hack
- http://www.tdbaska.hr/files/how-to-get-20210-robux-for-free_GM431946152.pdf
- https://www.tdbaska.hr/files/free-robux-2021_GM431946152.pdf
- https://www.tdbaska.hr/files/how-to-get-free-robux-no-verification_GM431946152.pdf
- https://www.tdbaska.hr/files/robux-gift-card-number-free_GM431946152.pdf
- https://www.tdbaska.hr/files/how-to-get-anything-in-catalog-for-free-roblox_GM431946152.pdf
- https://www.tdbaska.hr/files/minecraft-java-edition-key-free_GM479516143.pdf
- http://www.tdbaska.hr/files/how-to-get-free-code-roblox_GM431946152.pdf
- https://www.tdbaska.hr/files/i-was-hack-on-roblox-no-download_GM431946152.pdf
- http://www.tdbaska.hr/files/coin-master-free-spins-and-coins-hack_GM406889139.pdf
- http://www.tdbaska.hr/files/free-robux-no-verification-needed_GM431946152.pdf
- https://www.tdbaska.hr/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdf
- https://www.tdbaska.hr/files/get-free-robux-no-human-verification_GM431946152.pdf
- https://www.tdbaska.hr/files/op-rewards-free-robux_GM431946152.pdf
- http://www.tdbaska.hr/files/minecraft-iphone-free_GM479516143.pdf
- https://www.tdbaska.hr/files/coin-master-gold-cards-hack_GM406889139.pdf
- http://www.tdbaska.hr/files/free-robux-without-any-verification_GM431946152.pdf
- http://www.tdbaska.hr/files/free-spin-link-of-coin-master_GM406889139.pdf
- http://www.tdbaska.hr/files/minecraft-fly-hack_GM479516143.pdf
- http://www.tdbaska.hr/files/coin-master-free-coins-and-spins-link-2021_GM406889139.pdf
- https://www.tdbaska.hr/files/coin-master-hack-android-no-root_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_off00002ef4.bin` `893572f15a573524a9e8dbf4b06e1514c33fc4bbbde80da09afb8246fcac8cb3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EF4	22712 bytes
`font_01_sfnt_off00006189.bin` `2f9cd22228cedeba36a8977c1f12fab16e0ead4a7882c056539973ab18e06058`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6189	18868 bytes

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