Malicious PDF — malware analysis report

Static analysis result for SHA-256 59a68f124fc34f4e…

MALICIOUS

PDF

50.2 KB Created: 2020-09-28 17:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 434d1433b45602f2b4581f6e3353bd58 SHA-1: 8fffe015fc535b617e6b1eda0fae1e5b5b12d1ac SHA-256: 59a68f124fc34f4e61bed78efddcf113c792ade33221767a6af53f2f0cece58b
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 designed to manipulate search engine results. One prominent link, 'https://gettraff.ru/mozel?keyword=bass+guitar+lessons+sinhala+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on various domains, suggesting a lure to drive traffic 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://gettraff.ru/mozel?keyword=bass+guitar+lessons+sinhala+pdf
    • http://files.chandrabotanicals.com/uploads/1/3/1/4/131407227/89ceace99ece.pdf
    • http://files.karenmccannart.net/uploads/1/3/2/7/132740914/107614.pdf
    • http://files.artistmikemeermann.com/uploads/1/3/1/3/131380845/03242221.pdf
    • http://files.unadillaumc.com/uploads/1/3/1/3/131379615/9760239.pdf
    • http://files.boonecountyhumanesociety.org/uploads/1/3/2/8/132814086/8740564.pdf
    • http://files.rideguide45.com/uploads/1/3/2/6/132695428/2911894.pdf
    • http://jaxuke.devilsdata.com/uploads/1/3/1/4/131408618/remapiru_soral.pdf
    • http://zomifeni.atyourservicelimosjax.com/uploads/1/3/2/7/132710603/pimiripofivef.pdf
    • https://cdn.shopify.com/s/files/1/0429/2460/5599/files/field_guide_to_kanto.pdf
    • https://cdn.shopify.com/s/files/1/0429/7539/5993/files/14002033521.pdf
    • https://cdn.shopify.com/s/files/1/0428/9055/9655/files/precalculus_textbook_glencoe.pdf
    • https://ed752e9e-f0f0-4289-969d-21c54855a25f.filesusr.com/ugd/85c99c_0b3c09559b614430b734de5ca80af777.pdf?index=true
    • https://c6c6086d-63fc-4f81-8fb6-d358f08d9231.filesusr.com/ugd/361045_ba9f16676078465d97be42b8655fd141.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000595e.bin
e7b0b8a7bee96ce574f0a94eca0303ad49a6e6c3f517bf49699d59ae07f551c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x595E 5352 bytes
font_01_sfnt_off00006b4d.bin
4b418f4ddb564566f4221e5673be57f5a76a8d76a44ecf3f8a8e097c8b21d5fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4D 18636 bytes
font_02_sfnt_off00009a32.bin
27454c688ecd05b45e4c1e59ae478d42e51a3d5ae0dcc7515245a774796c405b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A32 9908 bytes

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