Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a998e58034e18c0…

MALICIOUS

PDF

28.5 KB Created: 2020-06-02 04:50:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 666039a11cac307cf296174ad6f945b4 SHA-1: d911bb7a3b9d0899234ef952a8ae19f742b742d5 SHA-256: 4a998e58034e18c0e2d057db2aa570e74ec6ec24cec37a13e48030ce949525c5
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially garbled, includes a URL that appears to be related to cybersecurity. The primary function seems to be directing users to a network of linked PDF documents hosted on various domains, likely for SEO spam or to distribute further malicious content.

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://mx.nuestraopinion.com/uploads/1/3/0/2/130289636/130289636.html#uygulamalarla+siber+g%25C3%25BCvenli%25C4%259Fe+giri%25C5%259F
    • http://bareandbalancedhoofcare.com/uploads/1/3/1/6/131636988/jiviwu.pdf
    • http://casskdesigns.com/uploads/1/3/0/5/130542780/raxilelajaneras.pdf
    • http://globalisationindia.com/uploads/1/3/0/8/130874451/09af7b7581dc.pdf
    • http://seven16litt.com/uploads/1/3/0/3/130323178/95cd70b948.pdf
    • http://stevie-borne.com/uploads/1/3/0/6/130639810/d668632f6834d84.pdf
    • http://achickandherpeas.com/uploads/1/3/1/1/131163983/4514002.pdf
    • http://mx.nuestraopinion.com/uploads/1/3/0/2/130289636/terms.html
    • http://mx.nuestraopinion.com/uploads/1/3/0/2/130289636/dmca.html
    • http://mx.nuestraopinion.com/uploads/1/3/0/2/130289636/policy.html
    • https://vajepevugu.files.wordpress.com/2020/05/gutizefo.pdf
    • https://samenazon.files.wordpress.com/2020/05/51339780258.pdf
    • https://zakudapure.files.wordpress.com/2020/05/83494093925.pdf
    • https://suzofosal.files.wordpress.com/2020/05/11664368772.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_off000045ad.bin
396c6cf73ed70ce0e874eef7d9008088e0306e15e95421e29a26821159c198fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45AD 9712 bytes

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