Malicious PDF — malware analysis report

Static analysis result for SHA-256 570df6f755582f7b…

MALICIOUS

PDF

59.8 KB Created: 2020-08-30 05:50:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58c5fbf4b7170a8ab2a243c6cacb7356 SHA-1: 4963303b3eaeb5a625e4728b7f897a478333a131 SHA-256: 570df6f755582f7ba67597b8b027991ddb6fe510e2e7a2c60f10afbf155590b4
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, many of which point to PDF files hosted on Shopify. One of these links, https://ttraff.ru/wix?keyword=fuerzas+que+actuan+en+un+puente+colgante, is identified as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to direct users to malicious sites. No scripts were extracted, and the document body is largely unreadable binary data.

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=fuerzas+que+actuan+en+un+puente+colgante
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8007882555.pdf
    • https://cdn.shopify.com/s/files/1/0431/4470/8245/files/duwupopejisije.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9590150980.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1266/files/31749657474.pdf
    • https://cdn.shopify.com/s/files/1/0428/4809/2323/files/30070180310.pdf
    • https://static.usrfiles.com/ugd/b8c837_1bead4e9c68543a59eed809cbc10e605.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c308b80a8334f6cbbac0840859dd934.pdf
    • https://static.usrfiles.com/ugd/b8c837_7edd44ac085d4c6fa20bd1fb0a4a616f.pdf
    • https://static.usrfiles.com/ugd/7dd30d_1c1f332d7ab64471a12240cb8f091b98.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/fodarevex.pdf
    • https://cdn.shopify.com/s/files/1/0430/8228/5216/files/pedezoduvukamoraw.pdf
    • https://cdn.shopify.com/s/files/1/0437/2915/8295/files/bozuzefunu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8414/3010/files/87760927937.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.

FilenameKindSourceSize
font_00_sfnt_off0000ad0c.bin
9d05eac970dcc40f19d3f71cc7f2562cbbc422b8dc0b2a612cbf0ee925b75e52		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD0C 5232 bytes
font_01_sfnt_off0000beef.bin
cdcbd74b6f8219c4b8047628ce4a25d8a3d1046222ccea39e07d3dfe823989c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEEF 10840 bytes

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