PDF malware analysis — malicious · 1b65ab5d8ee4ca83

MALICIOUS

PDF

49.7 KB Created: 2020-08-31 11:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 914dcf5690b726aa8c5be295bd5c9a00 SHA-1: 88c9fdd42027e85fa59740da8dab589bba1129b9 SHA-256: 1b65ab5d8ee4ca836f058653b791fe99730c92e7858e139d9b5f95568813fddd

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.com/wix?keyword=antes+obie+bermudez+descargar', is identified as a known malicious redirector. The document body contains garbled text and the authoring application is wkhtmltopdf, suggesting it was programmatically generated to host these links. The presence of a malicious redirector indicates an attempt to lure users to harmful content.

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.com/wix?keyword=antes+obie+bermudez+descargar
- https://static.usrfiles.com/ugd/b8c837_576b572585034db998e9fea34c285dc0.pdf
- https://static.usrfiles.com/ugd/b8c837_7202102a9bf84b11908bd8747f4437a7.pdf
- https://static.usrfiles.com/ugd/8ba634_3111fbb3bf0b4cb089124c66ebb7b49d.pdf
- https://cdn.shopify.com/s/files/1/0434/2828/2529/files/dibosirumuvukame.pdf
- https://cdn.shopify.com/s/files/1/0433/4649/3605/files/mowujafawut.pdf
- https://cdn.shopify.com/s/files/1/0433/4416/7064/files/zixatumemiwipenejip.pdf
- https://cdn.shopify.com/s/files/1/0431/4349/5841/files/55505483759.pdf
- https://cdn.shopify.com/s/files/1/0435/4487/1063/files/kepizoxegejogoxuwul.pdf
- https://cdn.shopify.com/s/files/1/0440/6122/9206/files/auto_chess_mobile_mage_guide.pdf
- https://cdn.shopify.com/s/files/1/0433/7264/2454/files/nutricion_enteral_y_parenteral_enfermeria.pdf
- https://cdn.shopify.com/s/files/1/0429/5013/1878/files/manorama_year_book_tamil_2020_free_download.pdf
- https://static.usrfiles.com/ugd/2ddd39_d013d720c8b84e6f856d4e1e32ddee8c.pdf
- https://static.usrfiles.com/ugd/cfbfd2_e07d4a8bcd1c47bb9e4ce3f9b53c19ed.pdf
- https://static.usrfiles.com/ugd/9cb927_a09a467528564c979f4135f506bed7bc.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005c2c.bin` `127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C2C	6744 bytes
`font_01_sfnt_off00006d13.bin` `d5421abed1a75c96840ceb627ac5e52d8a705d626b9f4348d3e5af8518460bed`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D13	5404 bytes
`font_02_sfnt_off00007f59.bin` `311e72c4c104196189daad96bb35556d0ceec9cc10cf650ccb75419223ef0d0b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F59	11324 bytes
`font_03_sfnt_off0000a489.bin` `39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA489	16092 bytes

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