PDF malware analysis — malicious · d87507a19119fc6b

MALICIOUS

PDF

56.1 KB Created: 2020-08-31 08:31:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3a79f59b4a35c9ea2a5368c1e7a84c57 SHA-1: 51b2913370b8df71efa684b71c91649aadfb1dec SHA-256: d87507a19119fc6b6fddb849b4b1f89754b76a235e13b2f366e0d2cf3d30f136

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.ru/wix?keyword=fisiolog%25C3%25ADa+del+ejercicio+lopez+chich', is identified as a malicious redirector. The document body itself is largely unreadable binary data, but the presence of the malicious link is the primary indicator of compromise. The file's purpose appears to be to redirect users to malicious infrastructure.

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.ru/wix?keyword=fisiolog%25C3%25ADa+del+ejercicio+lopez+chich
- https://static.usrfiles.com/ugd/b8c837_0cdca71efa4d420dae24df829404ce47.pdf
- https://static.usrfiles.com/ugd/b8c837_8a741c2f450e490d8d5542c3a90a17ec.pdf
- https://static.usrfiles.com/ugd/37321e_7bc32ef35763410bbeae099abb3ee9e7.pdf
- https://static.usrfiles.com/ugd/b8c837_916e44f6fad5480fa1539ac33117e80c.pdf
- https://static.usrfiles.com/ugd/b8c837_759d53d6afba4bc0a681aca42b34d0ef.pdf
- https://static.usrfiles.com/ugd/c162b3_b3cf18ebf8c44addb6dcd39717323af3.pdf
- https://cdn.shopify.com/s/files/1/0428/1306/3327/files/tipologia_de_los_grupos.pdf
- https://cdn.shopify.com/s/files/1/0435/1678/8900/files/vezuronasowijidorodape.pdf
- https://static.usrfiles.com/ugd/36f25b_42d5a3233dac4d6cb732476b7a0164f2.pdf
- https://static.usrfiles.com/ugd/6116da_ab9a01e51a71481599e61ce56690741f.pdf
- https://static.usrfiles.com/ugd/b8c837_026f840908d74eab9d7d60ded1dfcd08.pdf
- https://static.usrfiles.com/ugd/64d889_8cca5a09b0de4dcc9068492ae53fc23e.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 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000628b.bin` `f480c83f93287c041f8d023eac0d8f4dea7332fd3a629210630eae1755d65f63`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x628B	5072 bytes
`font_01_sfnt_off000073e0.bin` `bb90724a4a0551c0baf6b2a7dc3e55223abc52a6a7bd4ef0a4af91080a0da741`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73E0	4504 bytes
`font_02_sfnt_off000084ef.bin` `241a7ca61f5df8ed3905e14291a6694cd636d2daf9aaebd3956832c83d740dac`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84EF	11980 bytes
`font_03_sfnt_off0000ac31.bin` `ed3f134281e59a1d0f9a3b3393e7a4e24ea5264b1ceecd83a1a9bb58e0078b47`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAC31	16728 bytes
`font_04_sfnt_off0000c2ca.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC2CA	4324 bytes

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