Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c40b44cb3d121f6…

MALICIOUS

PDF

43.5 KB Created: 2020-08-30 05:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40a25eb7290dc7a7c6f96d78277be74c SHA-1: 1413bb12efe60323f1c2ab6d5029c4141d423582 SHA-256: 3c40b44cb3d121f60ad3aa461302f37c1cbd6dfb4dc38948a9205155f924734c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/wix?keyword=agnes+of+god+play+pdf'. This suggests the document is designed to lure users to a malicious site by presenting itself as a benign PDF download.

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=agnes+of+god+play+pdf
    • https://cdn.shopify.com/s/files/1/0431/9887/3762/files/wotik.pdf
    • https://cdn.shopify.com/s/files/1/0461/5412/1379/files/newborn_assessment_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0439/8638/7102/files/adoption_papers_south_africa.pdf
    • https://static.usrfiles.com/ugd/ea5d7b_f7fc58fd7f654c9a9a79a16841b387c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_cda37eaa1d2243e7ad204dc883723ec4.pdf
    • https://static.usrfiles.com/ugd/b8c837_b65c760b31a648a095036790a0873184.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9563/files/31386259544.pdf
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/tinapefidilawuzawakono.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdf
    • https://cdn.shopify.com/s/files/1/0435/5670/0319/files/www_bteb_gov_bd_result_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/miocardiopata_hipertrofica_obstructiva.pdf
    • https://static.usrfiles.com/ugd/07e02c_77c6288d43df4625a41a2d4e409c57e8.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c8b9c234fc9424180aa2cc9a37cbb81.pdf
    • https://static.usrfiles.com/ugd/289c5e_11bda40d8778478488da3d4f3ed8e0a9.pdf
    • https://static.usrfiles.com/ugd/7e6083_0a5bb8a0a0734895bdafec261abf8b79.pdf
    • https://static.usrfiles.com/ugd/b3bc21_78987f461be14cd28bfce4c6510b2f4d.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_off00006b4d.bin
6590bb512032eb337e9475c055deec8952ca898faa10e8f61afa71313506865c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4D 5204 bytes
font_01_sfnt_off00007d2a.bin
5a95821bdd0c2468a183e97051b7557012cda28b0444264ee35c97b14e141c0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2A 10808 bytes

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