Malicious PDF — malware analysis report

Static analysis result for SHA-256 48523168d0c63bc2…

MALICIOUS

PDF

39.3 KB Created: 2020-04-21 19:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4e7339691a50182cc9514d903af13dec SHA-1: f31413f2bf82a7cea143594c920d35918a846f19 SHA-256: 48523168d0c63bc22bb9196da9e9d64bb9894bb184aa8d455a8c299526b819a9
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection scheme. The embedded URL `http://midwestcustomservicesofwisconsin.com/uploads/1/3/0/4/130489240/130489240.html#angular+directive+set+template+dynamically` is also present. The purpose appears to be directing users to potentially malicious or SEO-abused content hosted on these external sites.

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://midwestcustomservicesofwisconsin.com/uploads/1/3/0/4/130489240/130489240.html#angular+directive+set+template+dynamically
    • http://unauna-sanctum.com/uploads/1/3/0/7/130776659/5195026.pdf
    • http://alanagoodwin.org/uploads/1/3/0/2/130291029/6074817.pdf
    • http://advancingoregon.org/uploads/1/3/1/4/131452827/2657432.pdf
    • http://wearebarnfield.com/uploads/1/3/0/4/130489070/rujonaxud.pdf
    • http://jonathanholmesmd.com/uploads/1/3/0/5/130590469/xafuvevez.pdf
    • http://rrconsultoriadeobras.com/uploads/1/3/0/5/130551599/5594290.pdf
    • http://gemmillion.com/uploads/1/3/0/6/130604885/c332f4d6.pdf
    • http://three7press.com/uploads/1/3/1/6/131637062/2259088.pdf
    • http://onlinebpi.net/uploads/1/3/0/2/130288402/fatiroxobemif.pdf
    • http://lanaluster.com/uploads/1/3/1/4/131453574/fefanogexibu.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_off00006f03.bin
0e9123df474cf17cd53b13a6d7ab1273e4e99ff1b90c5412cbd5e7230689f2af
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F03 8920 bytes