Malicious PDF — malware analysis report

Static analysis result for SHA-256 20163422dd8732f3…

MALICIOUS

PDF

38.7 KB Created: 2020-03-11 13:55:29 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6c570ddc386cbe3fd296101e42e03a97 SHA-1: 1678c4422e4d064fd23910d4d937989634ca5022 SHA-256: 20163422dd8732f3681f4a87f32d9f5c20c07d4918d6672cfe76308f515f7ed2
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO spam or to redirect users to malicious content. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a link farm or redirection scheme. The document body text, though partially corrupted, contains a URL that aligns with this observation. 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://xinshijiyulechengzenmejinbuqu.br3h.com/uploads/1/3/0/3/130379170/130379170.html#remedio+casero+para+el+acido+urico+alto
    • http://sthelensloves.co.uk/uploads/1/3/0/6/130621897/bukisitinazom.pdf
    • http://geekthreadz.com/uploads/1/3/0/3/130324044/6485a53a07492.pdf
    • http://www.thenorcliffefoundation.com/uploads/1/3/0/5/130590435/vefojos-zerofeka-fenukow.pdf
    • http://69shadesofguy.com/uploads/1/3/0/4/130488773/e2740e5e707f7.pdf
    • http://bullswc.com/uploads/1/3/0/4/130435895/tixeroramudozo-putonugasorek-zalafes.pdf
    • http://thecryptochicblog.com/uploads/1/3/0/8/130813330/fegovujuluzefawo.pdf
    • http://nasty-man.com/uploads/1/3/0/7/130738572/6fbb6fc341.pdf
    • http://caitlinmorrison.com/uploads/1/3/0/6/130604639/9020441.pdf
    • http://mta-sts.mail.cheapoklahomawebsites.com/uploads/1/3/0/2/130272994/a6d01db.pdf
    • http://jenniferdutoitart.com/uploads/1/3/0/2/130291373/5364b03c9162.pdf
    • http://rappamagic.com/uploads/1/3/0/6/130639882/divuruzoxorerivuguj.pdf
    • http://alexiszotos.com/uploads/1/3/0/6/130620343/tofutemigemux_liwobavob_voxugaduzu.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_off00006d8e.bin
76800b6804f95405fd415da1b52c405a068ad6cda155060cdcb483d22179f166		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8E 8508 bytes

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