PDF malware analysis — malicious · 2aa3d34370c5235d

MALICIOUS

PDF

47.4 KB Created: 2020-08-29 20:27:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4ca0b870b582f5cf5dd0158d2f2240f6 SHA-1: 8e088ca030b0d31d915c93780d638a041cae3212 SHA-256: 2aa3d34370c5235da5e46795c329b961f00a87b8290bcbd703ce51e6c7e63ab9

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF file contains a large number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a link farm. One of these links, https://ttraff.club/wix?keyword=common+english+sentences+pdf, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure the user to this malicious site.

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://ttraff.club/wix?keyword=common+english+sentences+pdf
- https://static.usrf
- https://static.usrfiles.com/ugd/b8c837_8766446a74dd4406a44874d7c1faf0f0.pdf
- https://static.usrfiles.com/ugd/b8c837_0acf6be20bd74e38a46358e8e203ea02.pdf
- https://static.usrfiles.com/ugd/a76634_5025cfbedf2a4f83b466ed5bec65d83c.pdf
- https://static.usrfiles.com/ugd/b8c837_50d717412911452c9e850a5bb5fc6dc9.pdf
- https://static.usrfiles.com/ugd/8d57bd_4be14f4e22b9429e949f065db7a77c55.pdf
- https://static.usrfiles.com/ugd/b8c837_2af84211bd3b42d4a2fc601104296d2d.pdf
- https://static.usrfiles.com/ugd/b8c837_9606e8de32fc4678b6a6a434a3988853.pdf
- https://static.usrfiles.com/ugd/b8c837_3817d52ff11649bc92c5abae18723297.pdf
- https://static.usrfiles.com/ugd/b8c837_a1ae12a515684e9cbe0ba16862820ffa.pdf
- https://static.usrfiles.com/ugd/b8c837_9457d1d0d431470e8844057789c5ded9.pdf
- https://static.usrfiles.com/ugd/b8c837_73915070b751498b9cb773e521ecde22.pdf
- https://static.usrfiles.com/ugd/c20ea7_ea1acc4a52f247cab8da1a9cfd6926ef.pdf
- https://static.usrfiles.com/ugd/b8c837_180bab1df0fc4d8e9ea8f9ab08d461e7.pdf
- https://static.usrfiles.com/ugd/b8c837_fa95854cc88841c696f29247252cd6fa.pdf
- https://static.usrfiles.com/ugd/b8c837_01abae187c814641bd7c5b67a3d3278f.pdf
- https://static.usrfiles.com/ugd/b8c837_fa1fb0994d5642f8a7a4401336d38efe.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007c85.bin` `fcb96bcf7279aac9da50f5f44d269337c121e46047b5c5e4aea6d39a689c5b73`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C85	5168 bytes
`font_01_sfnt_off00008dfd.bin` `275f196888555f86d06ccf6784d2dacb64ed9eaae67423535fa9baf74037d863`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DFD	10060 bytes

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