Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a52ae8195e78e09…

MALICIOUS

PDF

48.7 KB Created: 2020-08-29 03:51:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46217e54cd24e6a5fa579f9173446e6a SHA-1: 635fb671cdd093adab17d686ec532b32b9179eee SHA-256: 4a52ae8195e78e09ddeb1c7af60d76a4461e2f244aa767fdb2a3a91098012d77
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/wix?keyword=travail+du+cuir+wow+classic', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to external content. The primary attack pattern involves redirecting the user 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=travail+du+cuir+wow+classic
    • https://cdn.shopify.com/s/files/1/0452/0207/9893/files/excel_indirect_range_different_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/9212/2536/files/42286741305.pdf
    • https://cdn.shopify.com/s/files/1/0431/0922/0503/files/50833207251.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77160317291.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/lariboxaxedegibipoxi.pdf
    • https://static.usrfiles.com/ugd/b8c837_7bc36a9f5104486ca7fc52d0f3f10884.pdf
    • https://static.usrfiles.com/ugd/b8c837_b252e68996f640b09c7a88bae1fdb07b.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb335737a47b4a68aba77d7ba136fa2a.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbd1a2af1ae94595991240fcbf6f8176.pdf
    • https://static.usrfiles.com/ugd/b8c837_91f77b957d3846caad2053f2accffe7b.pdf
    • https://static.usrfiles.com/ugd/b8c837_39e4fce23e094c38b95c59222cf2cbd7.pdf
    • https://static.usrfiles.com/ugd/b8c837_21185b2c102c45cb8d6790f78e68726b.pdf
    • https://static.usrfiles.com/ugd/b8c837_acf7e84155ca4fe594712a62d09d1253.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_off00007f26.bin
9ae042dcc8d7751c00600dd2ef9a92ebc42eea0ab498df2010c784658e882cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F26 5036 bytes
font_01_sfnt_off0000905d.bin
71d7a67b07fdbe18c9b2b7e678d9a07e7a96f3e94ca1ffd9a7350e2622080afe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x905D 11504 bytes

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