Malicious PDF — malware analysis report

Static analysis result for SHA-256 359f7c6c1fe431f9…

MALICIOUS

PDF

61.3 KB Created: 2020-06-19 21:27:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95468874e6b1606bef6a075114049737 SHA-1: 165bfb6ad78799bd8be94e66e68180aa979a2c0d SHA-256: 359f7c6c1fe431f96537ef46c6be15a7a3357719725860ac01d21ba6daedb1b8
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which point to other PDF files hosted on various domains. This suggests a link farm or a mechanism to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a likely attempt to manipulate search engine results or distribute malware through a network of seemingly legitimate documents. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine a more specific attack pattern beyond link distribution.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://related-words.anyball.info/uploads/1/3/2/7/132740384/132740384.html#methanol+oxygen+fuel+cell+pdf
    • http://inclusiveaccess.net/uploads/1/3/1/0/131070197/867203.pdf
    • http://autodiscover.giuliosartisanalpasta.com/uploads/1/3/0/4/130436154/e6c002.pdf
    • http://artdubois.ca/uploads/1/3/0/6/130604566/felokewugowefotopogu.pdf
    • http://elemonline.com/uploads/1/3/1/8/131872185/e3d39d0117bf660.pdf
    • http://margaret-lilly-co.com/uploads/1/3/0/7/130776324/616f7e.pdf
    • http://holyspiritfremontrcia.org/uploads/1/3/0/9/130969407/veduwawofudomofo.pdf
    • http://svalc.org/uploads/1/3/1/1/131164132/8f91b51f05.pdf
    • http://tresley.com/uploads/1/3/0/7/130739663/8cd30b04.pdf
    • http://podollansa.devsite-1.com/uploads/1/3/0/3/130379070/2051934.pdf
    • http://radiofreechristianity.com/uploads/1/3/0/6/130620868/wafebizukalarozi.pdf
    • http://radiofreechristianity
    • 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_off0000aedb.bin
0b60767220137490e96a48426504f9998ff9e62cb7b20de06a3c87207d9ea57a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEDB 5152 bytes
font_01_sfnt_off0000c078.bin
c1848eb9fe90cb52e6f023d211f7bcfc4edbdf6cede7317031d556b2ca8865e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC078 11976 bytes

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