PDF malware analysis — malicious · 1e4093c55b52fe3f

MALICIOUS

PDF

48.5 KB Created: 2020-08-30 16:50:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5b907b69cccf1a78a3f82a05f290b1ac SHA-1: 3cd4716605cfef273a12094ab57e2331b452afc7 SHA-256: 1e4093c55b52fe3f1688cbc449d0c0060bed53b0286f652e28051b4ebae6b8f8

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used to redirect users to malicious sites. One of the primary URLs, 'https://ttraff.ru/wix?keyword=plano+cartesiano+cuadrantes+positivos+y+negativos', is flagged as a known malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it might be part of a link farm or SEO poisoning campaign.

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=plano+cartesiano+cuadrantes+positivos+y+negativos
- https://static.usrfiles.com/ugd/72216b_ee8bd0d61e254d64adb85ba0342a0fea.pdf
- https://static.usrfiles.com/ugd/b8c837_d5dd5b56f6ec452c817aecb991107b83.pdf
- https://static.usrfiles.com/ugd/b8c837_090c96f2527b490692779b830e1be589.pdf
- https://static.usrfiles.com/ugd/f55bec_8dffee07b04445cdafffab9c1aef35b2.pdf
- https://cdn.shopify.com/s/files/1/0437/2096/6298/files/vatosil.pdf
- https://cdn.shopify.com/s/files/1/0429/7300/3939/files/fancy_reba_lyrics.pdf
- https://cdn.shopify.com/s/files/1/0435/7731/1391/files/cite_mla_format.pdf
- https://cdn.shopify.com/s/files/1/0431/4392/1820/files/18284067299.pdf
- https://static.usrfiles.com/ugd/b8c837_e407f7480ea944ae9fee65e7533c5980.pdf
- https://static.usrfiles.com/ugd/76156b_f50c0707a2074ac6bb0caaf1b2227657.pdf
- https://static.usrfiles.com/ugd/67f5f7_da884641d90e4e3b8517352ca7264b82.pdf
- https://cdn.shopify.com/s/files/1/0436/8800/1689/files/11520486293.pdf
- https://cdn.shopify.com/s/files/1/0430/3493/5447/files/25889220309.pdf
- https://cdn.shopify.com/s/files/1/0428/1024/5286/files/88191768952.pdf
- https://cdn.shopify.com/s/files/1/0432/8541/4056/files/atmel_atmega32_datasheet.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006e76.bin` `9a0ebc5af31aedb4834abafacfe4da2ed0db0469257b58969179f95582a0df60`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E76	5284 bytes
`font_01_sfnt_off00008081.bin` `dc334490c104b969791e4ee647701031b359e51004e22a9eb7ee65f648355136`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8081	11048 bytes
`font_02_sfnt_off0000a44d.bin` `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA44D	4324 bytes

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