Malicious PDF — malware analysis report

Static analysis result for SHA-256 21c9f723386657ff…

MALICIOUS

PDF

41.6 KB Created: 2020-05-30 12:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7160621bc29596f31fc814c647c2d75b SHA-1: ef84583458eea8948c57a77204c706ce164c6e8b SHA-256: 21c9f723386657ff61eae415a7cdcf9db5512a5a6000cfc21ad0924de5bd7030
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. These links point to various domains, suggesting an attempt to manipulate search engine results or to host malicious content. The embedded document body text, while partially corrupted, includes a reference to 'Wilfred Owen dulce et decorum est', which may be a lure. No scripts were extracted from this sample.

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://yooni.org/uploads/1/3/0/5/130589353/130589353.html#wilfred+owen+dulce+et+decorum+est
    • http://mta-sts.mx.augustabaptistassociation.org/uploads/1/3/1/4/131406352/tedotibegoligirade.pdf
    • http://richardiswriting.com/uploads/1/3/1/4/131454859/4689465.pdf
    • http://pearlclassystyle.com/uploads/1/3/0/6/130639351/vavav-dezejivipi-gabupijozu.pdf
    • http://nicolachiericati.com/uploads/1/3/0/4/130436136/9565345.pdf
    • http://littlemews.com/uploads/1/3/1/4/131413040/99da41603.pdf
    • http://mta-sts.mx.kathleenharp.com/uploads/1/3/1/6/131637020/8969113.pdf
    • http://floridamotorscenter.com/uploads/1/3/0/6/130640033/4081c1887b09008.pdf
    • http://whiteblacksonic.com/uploads/1/3/0/7/130775883/5812494.pdf
    • http://hewittadvisorygroup.com/uploads/1/3/0/5/130551839/monotologineve-dejufowu-fefira.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_off0000775b.bin
9af01f26b362cc66137f2aee8db9bcbcab342d6ff698d9f6e090fd716b1af8d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x775B 10688 bytes

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