Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aa974733ed9293c…

MALICIOUS

PDF

45.5 KB Created: 2020-08-30 11:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f15e93fa0fa8b958328c5d99f2e8092 SHA-1: fd018d9f8550393d12008fc8a8055465b3871df5 SHA-256: 3aa974733ed9293cd3055b5f3195602d390cbb5c5942a135f66e4a9601c91daa
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=honda+250+xlr+fiche+technique'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary host being 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the redirector URL. This suggests the document's primary purpose is to lure 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.cc/wix?keyword=honda+250+xlr+fiche+technique
    • https://static.usrfiles.com/ugd/b8c837_7a1c879dd25f4d749d38b057a80c2973.pdf
    • https://static.usrfiles.com/ugd/857e61_7480655e6332404eae5cd528a4f68e30.pdf
    • https://static.usrfiles.com/ugd/599026_b530e8c532ab4147aac8189c18829d2f.pdf
    • https://static.usrfiles.com/ugd/55cc32_9baac1b00fbe4351b8303916ed9ea26a.pdf
    • https://static.usrfiles.com/ugd/12dc78_6c95be0fabcd49999d9eb70b3935dfd2.pdf
    • https://static.usrfiles.com/ugd/b8c837_17821927c5e34fd98c198a30765cdcdf.pdf
    • https://static.usrfiles.com/ugd/b8c837_d84a30ca314344718c75cd84b6c6660e.pdf
    • https://static.usrfiles.com/ugd/b8c837_b291d8e5287540a7a20338fd5a39b0c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_5503682375f64e54a3e89ee9cbca0933.pdf
    • https://cdn.shopify.com/s/files/1/0432/8295/6443/files/benzodiazepinas_farmacologia.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9722/files/kuzokirofitawakarafiw.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.

FilenameKindSourceSize
font_00_sfnt_off00005d7c.bin
4e679f6dd34aa35df4ef7dc1aac8911751eef223358aaf97f8da6232b92a2dea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7C 5484 bytes
font_01_sfnt_off00007021.bin
bcd5a050269bfab6f435788cb4a49344d8c954f0293706ff851795329c1be0e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7021 10376 bytes
font_02_sfnt_off000093c9.bin
dc743b41e5c9b9e4d56ad8c22d1311c6eb3cecbc0d04401a7a33aeed2fa7944a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93C9 16244 bytes

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