Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd14ba70e2064c4…

MALICIOUS

PDF

39.2 KB Created: 2020-04-25 06:11:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0428efa6b9d49eda6f5cadb3fc281557 SHA-1: df3448b172b884483debbd3928f2524c05e7f731 SHA-256: ddd14ba70e2064c4b5aa1e1ac6cdded5a0a7d247be0c21cec54dda479b028c0a
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to domains that appear to be part of a link farm designed to host SEO-optimized content. One of the embedded links, 'http://buymichaelgptest.com/uploads/1/3/0/2/130287895/130287895.html#c+programming+interview+questions+and+answers+indiabix', is presented in the document body, suggesting a lure to a potentially malicious site. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates a malicious intent to generate traffic or host malicious content across numerous domains.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://buymichaelgptest.com/uploads/1/3/0/2/130287895/130287895.html#c+programming+interview+questions+and+answers+indiabix
    • http://kuantanwolf.com/uploads/1/3/0/6/130620217/5308262.pdf
    • http://contiincredibleconnection.com/uploads/1/3/0/5/130551543/marififugefebodezax.pdf
    • http://the180entertainment.com/uploads/1/3/0/6/130639212/6780878.pdf
    • http://salazaryaguirre.com/uploads/1/3/0/7/130776026/3843461.pdf
    • http://rainbowfamilylife.com/uploads/1/3/0/5/130545882/135023.pdf
    • http://luxurybodysaltz.ca/uploads/1/3/0/6/130621060/629b1.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_off00006d1e.bin
069c09ce8ed59060b0fc0fb1e157813dc933bddfff6b069ba89f4f04ef1e7d2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1E 9392 bytes

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