Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df7416f3e51e265…

MALICIOUS

PDF

41.0 KB Created: 2020-09-02 14:19:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f29b8fe363f18a6ad3760fb399ccc18 SHA-1: 15315b374f4a196d52e1b0cdaeb2770362900e6b SHA-256: 4df7416f3e51e265e02eaef0e58c8bb52bfe726a2b773cbb7e88941c3e6f6587
120 Risk Score

Malware Insights

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

The PDF file contains a mass link farm, directing users to numerous external PDF files, with a primary malicious redirector at `https://ttraff.ru/wix?keyword=landscape+architecture+design+process+pdf`. This indicates a social engineering attempt to lure users to potentially malicious content. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

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=landscape+architecture+design+process+pdf
    • https://cdn.shopify.com/s/files/1/0436/8806/7225/files/phyno_one_chance_video.pdf
    • https://cdn.shopify.com/s/files/1/0438/2153/1293/files/latest_biodata_format_for_marriage_file.pdf
    • https://cdn.shopify.com/s/files/1/0435/8704/3496/files/barnett_s_bicycle_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/58192947869.pdf
    • https://cdn.shopify.com/s/files/1/0435/4880/3227/files/animate_cc_manual.pdf
    • https://static.usrfiles.com/ugd/45fd81_b3122f81f0204546a4ad2ccc51d01c2e.pdf
    • https://static.usrfiles.com/ugd/e1d12c_fe7a8b86fa7641ae8ae3645305185be0.pdf
    • https://static.usrfiles.com/ugd/0aab01_b5f9de4f2df442638263cd5fb69bf52f.pdf
    • https://static.usrfiles.com/ugd/253000_2c018e5fc2ef4d40bae8d6e59d647017.pdf
    • https://static.usrfiles.com/ugd/b48b60_f5f71ee44cfc4827b4b33ea40cab61c4.pdf
    • https://static.usrfiles.com/ugd/b8c837_f869c9e6f1204f20bb41cb2ded25ac0e.pdf
    • https://static.usrfiles.com/ugd/b47706_b0de3ba0ee3845f696fe7c34a11d0fa0.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_off0000623d.bin
16a5ac07ffd847313d4eadc0ddb0d88ac99e90f3d3d4298da68c16d250e313a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x623D 5324 bytes
font_01_sfnt_off0000745e.bin
b84f4cb2038318f27773518660cc782eaa802af9055e489ee6a1e1d50659ce7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x745E 10240 bytes

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