Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e6401c86854c55…

MALICIOUS

PDF

38.8 KB Created: 2020-04-07 19:51:50 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 40aeb6a62be7bd74bd1d722a33b6e558 SHA-1: d97e63fffdd3d31926c911bfd194e69d4b9601e5 SHA-256: b1e6401c86854c558d334e677ce3074ca49007e5788fe77495abe1e4e8ce9193
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, a technique commonly used for SEO manipulation or to distribute further malicious content. The embedded document body text, though heavily obfuscated, contains references to 'grease scenes script' and metadata indicating it was generated by wkhtmltopdf, suggesting a programmatic generation of this link farm. The primary purpose appears to be directing users to a multitude of other PDF files hosted on various domains.

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://juliewolzaraiza.com/uploads/1/3/0/8/130814859/130814859.html#grease+scenes+script
    • http://tradingcopilot.com/uploads/1/3/0/2/130289799/rexiwetepunap_xonogaramo_rokerid_rapomiruwusu.pdf
    • http://easeosteo.com/uploads/1/3/1/0/131069759/gukedopafimovez.pdf
    • http://uoesi.com/uploads/1/3/1/0/131071111/vitopimojatu.pdf
    • http://shalominc.com/uploads/1/3/1/4/131452952/gojijugokuzigiwedep.pdf
    • http://beltonsautoservice.com/uploads/1/3/0/7/130739624/d5793aee96d.pdf
    • http://planetfnb.com/uploads/1/3/0/6/130621700/luvudekizugutexofiru.pdf
    • http://keashamarie.com/uploads/1/3/0/3/130323437/zavewametug-woxowunutekuro-zasuf.pdf
    • http://knightshurst.com/uploads/1/3/0/8/130874309/ravado_gawemebowebolu_dejilaji_waganubelovi.pdf
    • http://snowmowbroz.com/uploads/1/3/0/9/130969317/tewuvaxamusa.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_off00007005.bin
daf2c72f86ad53b0bd8b4f6d54d93dec9a927d7ced35da3763dcce0377ca9034		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7005 7924 bytes

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