Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c721b78a2c94627…

MALICIOUS

PDF

30.5 KB Created: 2020-06-13 13:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 753e2e9ada16e17adbf9a0d28e07887e SHA-1: ac1af502cf07383555bac7d584b9f9856735eb7d SHA-256: 3c721b78a2c9462779b35a14612630f79be8244c919f006318a8b90616510cc5
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, identified by the PDF_SEO_LINK_FARM heuristic. The embedded document body text also contains a URL, suggesting the primary purpose is to redirect users to external content. The nature of these links, predominantly pointing to other PDF files on various domains, indicates a link farm or SEO manipulation tactic. No scripts were extracted, limiting the analysis of direct payload delivery.

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://customdesignfinishes.com/uploads/1/3/1/0/131071166/131071166.html#s%25C3%25BCper+ot+2+full+izle+t%25C3%25BCrk%25C3%25A7e+dublaj
    • http://bisericafrumusica.com/uploads/1/3/1/1/131164185/6159121.pdf
    • http://rodneylwalkernc.com/uploads/1/3/0/6/130639334/wiwedupinebujikeril.pdf
    • http://amhsinview.com/uploads/1/3/1/8/131871692/ac3cc302e0dc.pdf
    • http://pack359bsa.org/uploads/1/3/0/3/130323409/tisasitabidasetew.pdf
    • http://webdisk.deirdresinsights.com/uploads/1/3/0/5/130588169/pikalaraseduru.pdf
    • http://mta-sts.mail.davra.lt/uploads/1/3/0/8/130813644/nokogodobuvidonu.pdf
    • https://gesifazu.files.wordpress.com/2020/06/15512397528.pdf
    • https://gonaburezi.files.wordpress.com/2020/06/gowimixuxibin.pdf
    • https://kadipuxosika.files.wordpress.com/2020/06/44319308898.pdf
    • https://gebotapigi358268599.files.wordpress.com/2020/06/2803290487.pdf
    • https://nufovax.files.wordpress.com/2020/06/wuzifirobukaxusabokofofig.pdf
    • https://tolefeguxi.files.wordpress.com/2020/06/66218659525.pdf
    • https://tifavupil.files.wordpress.com/2020/06/xowereb.pdf
    • https://tofunibak.files.wordpress.com/2020/06/95895523082.pdf
    • https://vunawokowe.files.wordpress.com/2020/06/xerugexe.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_off000049b8.bin
2c5afcd0bc73d0f475600a285c5b7e5b01a1bd9d95cc4289f9ffac39a1217181		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49B8 11028 bytes

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