Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd4a162284c6b8b9…

MALICIOUS

PDF

40.2 KB Created: 2020-04-16 04:16:34 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8099bb8958c1468bc2e2b6e72cababc3 SHA-1: 585710b310f86a29971d4d471ab03d5b119c8100 SHA-256: bd4a162284c6b8b914465393de1f6efe9ce1ddc7f60383227739d3ec03ec62c3
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of these links, http://northwestuu.com/uploads/1/3/1/4/131438024/131438024.html#euchre+strategy+guide, is embedded in the document body and presented as a strategy guide. This suggests a social engineering tactic to trick users into visiting potentially malicious websites. 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://northwestuu.com/uploads/1/3/1/4/131438024/131438024.html#euchre+strategy+guide
    • http://sunncafe.com/uploads/1/3/0/6/130639808/fe547f.pdf
    • http://fitzpatricksafetytraining.com/uploads/1/3/0/2/130273791/ca1d6d44ac.pdf
    • http://tsvtheshoevault.com/uploads/1/3/0/4/130477009/ridikefopofulad.pdf
    • http://skyline7.net/uploads/1/3/0/4/130488121/paboxiluje.pdf
    • http://tennisbuddy4u.org/uploads/1/3/0/9/130969149/3873605.pdf
    • http://mandlaorganic.org/uploads/1/3/1/3/131382243/wiwalejupurem.pdf
    • http://dogsoflittleton.com/uploads/1/3/0/6/130639503/53d381faaf.pdf
    • http://rossmckean.com/uploads/1/3/0/8/130873830/b9356e20b5c9979.pdf
    • http://onceuponwallst.com/uploads/1/3/0/2/130274098/d7e14443a35ce.pdf
    • http://clearcents.org/uploads/1/3/1/0/131070920/pelawulipazomoz.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_off00007685.bin
7fd2dc55540f058db76ee95f5520519fbe5e4c5292811bee1aa249a4b36885c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7685 7836 bytes

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