Malicious PDF — malware analysis report

Static analysis result for SHA-256 42ddbcc3cb8388a8…

MALICIOUS

PDF

33.9 KB Created: 2020-04-25 08:09:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 777e6b886bbf44a2dc1428b35b5845f5 SHA-1: 9f92af942239d3070228b96dc13956677db96e73 SHA-256: 42ddbcc3cb8388a86c1f916349bdbdbb3f2e80597a452f6aa6805c76ac30cd27
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which appear to be part of a link farm designed to manipulate search engine results. The document body contains a reference to 'where are you now ringtone free', suggesting a lure to attract users to these external sites. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates this malicious intent. 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://barn23.com/uploads/1/3/0/2/130272804/130272804.html#where+are+you+now+ringtone++free
    • http://gaelforce.org/uploads/1/3/0/6/130605146/9327014.pdf
    • http://hopkinsinsurancegroup.com/uploads/1/3/0/6/130639710/sefipi.pdf
    • http://jkcabinetsofcentraloh.com/uploads/1/3/0/4/130490719/6667347.pdf
    • http://greetingcardsatjeffersongalleries.com/uploads/1/3/1/0/131070596/da55937.pdf
    • http://darklostlovepspells.com/uploads/1/3/0/5/130588931/zitakalorexubimitiv.pdf
    • http://shopmagnoliarootsonline.com/uploads/1/3/1/1/131164315/nawawojugof.pdf
    • http://colletbrotherproduction.com/uploads/1/3/1/4/131409158/wukenuxalu.pdf
    • http://darklostlov
    • 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_off00005f8c.bin
1156cab29e27ad18378d76b3118331d16c57da63dc8c2dd599a5cb55506b2081		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8C 7288 bytes

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