Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b07faa8d673c929…

MALICIOUS

PDF

43.6 KB Created: 2020-08-29 23:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65814fec8c380c8d9a649d0b86d6a798 SHA-1: fa6aa16db159047ed5e1f344e1e938f2ddd2c60b SHA-256: 7b07faa8d673c92924a4e959e1c9efb02a30709c01c8b1d2684319308ef58b00
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a link farm pointing to numerous PDF documents. One of these links, hosted on ttraff.com, is a known malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it may be a lure to entice users to click on the malicious link.

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=ronnie+anne+santiago
    • https://cdn.shopify.com/s/files/1/0431/2891/4087/files/unified_building_bye_laws_for_delhi_2020_english.pdf
    • https://cdn.shopify.com/s/files/1/0468/8130/8829/files/nugud.pdf
    • https://cdn.shopify.com/s/files/1/0439/3759/5560/files/rockstar_server_status.pdf
    • https://cdn.shopify.com/s/files/1/0429/4275/9071/files/is_g_suite_hipaa_compliant.pdf
    • https://cdn.shopify.com/s/files/1/0435/7164/2527/files/email_template_npmjs.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/57417604497.pdf
    • https://cdn.shopify.com/s/files/1/0434/2857/7447/files/94497431836.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/zizutomoguku.pdf
    • https://cdn.shopify.com/s/files/1/0430/6472/1562/files/border_gateway_protocol_configuration.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/68003838360.pdf
    • https://static.usrfiles.com/ugd/b8c837_2c04342ecdfa4804b4932e2c9f395057.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b45f645a8f446e1a05ee991c4a83db5.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000671e.bin
3bbc2977c6b657396e1c476a8eda2e8e8c78ae3bc264b082ec4a9f8877b2cbb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671E 4732 bytes
font_01_sfnt_off00007751.bin
238c15d46c027e9bb99bde5ccbc433ce88440f52686b8820c40b03e25fffe8f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7751 10340 bytes
font_02_sfnt_off00009aaa.bin
f27f1dab863be407bc80ce69f069aaa000ada345c50a5fba1d6b915b5f603bb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AAA 1736 bytes

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