Malicious PDF — malware analysis report

Static analysis result for SHA-256 45eed69f9e546a1d…

MALICIOUS

PDF

43.0 KB Created: 2020-08-13 21:38:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a13f71ddd4878258f598cc3a5df2ac7 SHA-1: be415bb3c9e1abaee89191b94109b90b049d3635 SHA-256: 45eed69f9e546a1d479f22d68b402ae7ca306a855d4aa40b2a009ae2e5048a66
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to an 'Oxford law examiners report 2019'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The presence of multiple PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for malicious content.

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/pify?keyword=oxford+law+examiners+report+2019
    • http://files.awardmusic.biz/uploads/1/3/1/3/131379991/pavexarami.pdf
    • http://files.coyoteruntervuren.com/uploads/1/3/2/6/132681479/a65f40442e89c20.pdf
    • http://files.alex-chien.com/uploads/1/3/1/6/131606268/8618474.pdf
    • http://vusol.caricaturesbysimon.com/uploads/1/3/1/4/131453284/eaae9.pdf
    • https://cdn.shopify.com/s/files/1/0434/2936/3878/files/sazotozazosanipajamuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/the_admonitions_of_ipuwer.pdf
    • https://cdn.shopify.com/s/files/1/0440/7794/0886/files/pajuvebepup.pdf
    • https://cdn.shopify.com/s/files/1/0433/4714/8950/files/47884486356.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/traditional_catholic_calendar_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/3876/1379/files/89200584405.pdf
    • https://cdn.shopify.com/s/files/1/0434/1750/1853/files/tabela_de_aliquota_de_icms_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/0601/7185/files/benefits_of_walking_in_god_s_ways.pdf
    • https://cdn.shopify.com/s/files/1/0431/9661/2768/files/ribisekifolofilomi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/17272582914.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/modified_waterfall_model.pdf
    • https://cdn.shopify.com/s/files/1/0432/4012/8671/files/36968020745.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_off00006592.bin
865ea69ea965548dfcc45e53273ab8c3f32bde9f9223f3620879d8edb6abf9ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6592 5856 bytes
font_01_sfnt_off0000798d.bin
11cf85abacdc5b0361a5d627bb8dff83cbd1ea8781b2826bfcbd46392cb2b51a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x798D 10996 bytes

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