Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5bd76178c13fb4…

MALICIOUS

PDF

37.1 KB Created: 2020-06-19 20:12:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d6cecb809bb9e371c6ac10329215138 SHA-1: e3be456ff6658823ec91a584dfaaf5d2278fe41e SHA-256: 8e5bd76178c13fb4b395e02a5cc9ab6ad69f53c9bdbf21391f15e91eff9eb5aa
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains. The document body mentions 'Aptana studio 3 rails tutorial' and includes a primary URL, suggesting a lure to a potentially malicious site. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, reinforcing the idea of a link farm designed to direct users to various destinations. 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://jawsuit.com/uploads/1/3/0/8/130814535/130814535.html#aptana+studio+3+rails+tutorial
    • http://jetherington.com/uploads/1/3/1/6/131636960/lobes_dixowota_jizutajerokaje_saxukabob.pdf
    • http://sanchespack.com/uploads/1/3/0/5/130590314/0cc7e0b8.pdf
    • http://themobilitymedics.com/uploads/1/3/1/1/131163514/4943415.pdf
    • http://usafanfanatics.com/uploads/1/3/0/7/130740323/5378770.pdf
    • http://goodseedsshop.com/uploads/1/3/1/4/131453111/vuvudemitetigezudu.pdf
    • http://artbyltj.com/uploads/1/3/1/4/131437640/7100078.pdf
    • http://oldaleandsons.org/uploads/1/3/1/3/131384113/4011499.pdf
    • http://leaderwithpurpose.com/uploads/1/3/0/5/130590353/jawonixilivatewoj.pdf
    • http://jazzycolor.studio/uploads/1/3/1/4/131453871/f589a408.pdf
    • http://tmc-houston.org/uploads/1/3/0/8/130814004/765349a936303.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053dd.bin
9aeee3279ace6a3e017d06d9f428da8bd4e059d813878ac137b1e6c5ce449215		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53DD 4868 bytes
font_01_sfnt_off0000645c.bin
81fe503b4030c22a328bc2813c39096ae6fcfb202fb2aeb94f2d778e58724453		 pdf-font-stream PDF embedded font (sfnt) at offset 0x645C 10536 bytes

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