Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa79101e3ac13c88…

MALICIOUS

PDF

38.1 KB Created: 2020-04-01 15:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6fdc6a7c582b26968ad09d83ef7777ce SHA-1: 639bc42c9e64b2b5d646f397a8162a78755cc023 SHA-256: fa79101e3ac13c881e4f811daa605aa567a6a7baaeec9d3e1546da2135294e3b
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many pointing to PDF files hosted on various domains. The document body, though partially corrupted, suggests a lure related to 'math problems with division and decimal point'. This indicates a link farm or redirection strategy, likely intended to lead users to malicious content or phishing sites. No scripts were extracted, limiting the analysis of direct execution capabilities.

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://realmarkward.com/uploads/1/3/0/2/130292013/130292013.html#problemas+matematicos+con+division+y+punto+decimal
    • http://acumenwm.com/uploads/1/3/0/5/130546519/gebasan.pdf
    • http://sdkuykendall.com/uploads/1/3/0/8/130814338/miguxuw.pdf
    • http://stonemoon.shop/uploads/1/3/0/7/130775222/muwugexoluxav-bosipoz.pdf
    • http://uniquetowelservices.com/uploads/1/3/0/6/130639147/2094226.pdf
    • http://vanitasarts.com/uploads/1/3/0/5/130550930/fomuvabibefoge.pdf
    • http://happybirthdaylizs15th.com/uploads/1/3/0/8/130874031/c23900.pdf
    • http://bankheadbarandgrill.com/uploads/1/3/0/5/130551487/befidaxidukoba.pdf
    • http://corporatedrumming.com/uploads/1/3/0/6/130639521/wijajadajiwewo.pdf
    • http://bigboylittleboyracing.com/uploads/1/3/0/6/130605332/bejajewubogo-pefonusuxuxipot.pdf
    • http://tailgate-guys.com/uploads/1/3/0/2/130291809/1047768eae2.pdf
    • http://playwithyourbone.com/uploads/1/3/0/7/130739479/d5761f9842.pdf
    • http://stuarthowie.com/uploads/1/3/1/3/131384663/1cc66a.pdf
    • http://beyondimpossible.org/uploads/1/3/1/3/131383407/dudumofepalo.pdf
    • http://coventryeyecareassociates.info/uploads/1/3/0/7/130739227/5228828.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000695b.bin
4680cf5d49a0979ea244f602d07c76b7f00dad2382df33fc99898ab8dab9f1bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x695B 8620 bytes

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