Malicious PDF — malware analysis report

Static analysis result for SHA-256 518b240acb39e579…

MALICIOUS

PDF

40.0 KB Created: 2020-08-30 23:23:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 743f18d6aeffa7b22f74a0f6cfc1b706 SHA-1: 6ad2c91c788a8e4bb0246a7e70396edc6e7a3889 SHA-256: 518b240acb39e579bbd20dc2d9eb133d5a5c8732253d40c5a15135c9c74d0106
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to a link farm hosted on static.usrfiles.com, and one critical link to a known malicious redirector at ttraff.com. This indicates a social engineering attempt to direct the user to malicious infrastructure. No scripts were extracted from this sample.

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.com/wix?keyword=gestionbbox.+lan+configuration+du+ro
    • https://static.usrfiles.com/ugd/3d0627_8a143701b0544cd0966f24651892bc29.pdf
    • https://static.usrfiles.com/ugd/a76634_bc5b4b6eef354eacb8aafa8c7931bda4.pdf
    • https://static.usrfiles.com/ugd/b8c837_b6b5c9e69a094842918f2183ba34707f.pdf
    • https://static.usrfiles.com/ugd/aef5b7_018bf559e7fc40fd9e99a3cb7965f543.pdf
    • https://static.usrfiles.com/ugd/b8c837_96711c4ee1d3412d9f57b6d255b93abe.pdf
    • https://static.usrfiles.com/ugd/b8c837_7967f1d3deb44bf9ba298d13a5324efb.pdf
    • https://static.usrfiles.com/ugd/e5cbe5_7b383e25da4741a1a997e1c04ebc862d.pdf
    • https://static.usrfiles.com/ugd/3dd68e_e62f6211bb98424fb09aeedaa93c4ba6.pdf
    • https://static.usrfiles.com/ugd/b8c837_21485fa6f9214a2188425a7cfd558307.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f01ff7c3d394347bf32dd19df69c6b9.pdf
    • https://static.usrfiles.com/ugd/4cf28d_4789b3d1bf474b8984e1176a2337a5cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee299560ee4442fbb99473f9bbd577f1.pdf
    • https://cdn.shopify.com/s/files/1/0431/6522/1023/files/86614684274.pdf
    • https://cdn.shopify.com/s/files/1/0432/6984/9246/files/werarorutuxebivur.pdf
    • https://cdn.shopify.com/s/files/1/0433/0917/0856/files/2873007212.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_off00005d8e.bin
159adccf1a5c9dd739dce358e2c31a4d470f7366a2259f4143c07b41a4ddd921		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8E 5460 bytes
font_01_sfnt_off00007032.bin
ee1157592a3689406d3b20b3c8844907d3089a17f1e257fd26221708327319bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7032 10272 bytes

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