Malicious PDF — malware analysis report

Static analysis result for SHA-256 c07a18810335542a…

MALICIOUS

PDF

28.4 KB Created: 2020-04-26 19:27:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a2acf4f1a898475c82adab09c035b2fa SHA-1: 25e3dc0c715a6f8fbe2b76b33485639d2707bc28 SHA-256: c07a18810335542af6d015f839145ce711bf0546cac645e38db878d1e970791f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, identified as a link farm, suggesting a deceptive purpose. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes a URL that appears to be a lure for 'Eversource nh report power outage'. The primary attack pattern involves redirecting users to numerous external sites, likely for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://oakclass.com/uploads/1/3/0/6/130639068/130639068.html#eversource+nh+report+power+outage
    • http://stylemeprettyboutique.shop/uploads/1/3/0/7/130776739/mugukogo_doxerijijaluz_xifekanuwe_jovokipozepi.pdf
    • http://hannahbeautyskin.com/uploads/1/3/0/3/130379142/2173952.pdf
    • http://dustydiamondscleaningservice.com/uploads/1/3/1/0/131070055/latusoxamu-tavobaxedotaf-gazosawage-xuxejowetit.pdf
    • http://doverorchestra.com/uploads/1/3/1/4/131438024/9582369.pdf
    • http://mrslowesclass.com/uploads/1/3/0/6/130639233/4eaa8c.pdf
    • http://cantontreeservicema.com/uploads/1/3/0/6/130604197/wejozufozor_xopavezoda_getaz.pdf
    • http://codeketoforlife.com/uploads/1/3/1/4/131453133/pakozubuzugitev.pdf
    • http://drycreekaustralianshepherds.com/uploads/1/3/0/5/130551247/b75162f0bd77.pdf
    • http://strigiformsci.us/uploads/1/3/0/3/130313590/tiwenewuxigate-batitoletirobu.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_off000049b5.bin
9a1baf0b83467147064bc783a5784e826b9d61a7aae823aebe1ce0cf9d4d534a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49B5 7088 bytes

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