Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba19a855113403a2…

MALICIOUS

PDF

88.1 KB Created: 2020-08-30 10:49:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8498137030bb71e17dd89487842562cf SHA-1: 7f158cbd27a14df539cfd5893fe7515858fff21c SHA-256: ba19a855113403a2b2f6484a3b9dbe0e51b4ad6078f056455b9d1bdd7aa06f27
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.link/wix?keyword=plan+y+programas+2011+secundaria+tecnologia', is flagged as a known malicious redirector. The document body, though heavily obfuscated, appears to contain the same URL, suggesting the primary purpose is to lure users to malicious sites.

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.link/wix?keyword=plan+y+programas+2011+secundaria+tecnologia
    • https://static.usrfiles.com/ugd/b8c837_0b6596033ebe41459a3f3a90c3985e06.pdf
    • https://static.usrfiles.com/ugd/cafc24_439b337e3d4f4b3682380178c9616e4e.pdf
    • https://static.usrfiles.com/ugd/735189_53fe3dc1ad26412ebf991a17e37b519f.pdf
    • https://cdn.shopify.com/s/files/1/0440/3711/1973/files/75662030149.pdf
    • https://cdn.shopify.com/s/files/1/0435/3464/7460/files/how_to_download_kindle_unlimited_books_to.pdf
    • https://static.usrfiles.com/ugd/b8c837_7623674079ae4d38a386c18a331a61c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a6e593227de4e2e8719c2da2bdf19a4.pdf
    • https://static.usrfiles.com/ugd/ea5d7b_e150e881467f478b9d4ca62c768154bc.pdf
    • https://static.usrfiles.com/ugd/98857b_c3643ac998b04a54a3a6d35ffcc85abf.pdf
    • https://static.usrfiles.com/ugd/ea78e0_b1eae354dd4940d8be52437d389e40fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_69b7f69f54454e3f9f877e93227c4a94.pdf
    • https://static.usrfiles.com/ugd/4ae4db_d0605ca5df7b468a9ebd215568d41b35.pdf
    • https://static.usrfiles.com/ugd/8b9728_cc0e9bc58e624bc18515e28ebd1f63b3.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_off0001178b.bin
874f1d047391baa10569172295659af95ebd7f65a3d375202341c388f017f810		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1178B 5820 bytes
font_01_sfnt_off00012b4f.bin
f24511548f9382fd77a930fd38e39245d341ba4709fca6745706efb2096f09ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B4F 11716 bytes

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