Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbc89420a76a599e…

MALICIOUS

PDF

48.9 KB Created: 2020-04-30 18:02:38 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6ad309f7e3ad149ac095a3ccccb4fbb2 SHA-1: 1bb42f8bc5735334a84c73f97c3013b58534c022 SHA-256: dbc89420a76a599e9004e4c4bb9b49822dd70b81af0449205f0fd7f1fa72337b
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, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though heavily obfuscated, contains text related to 'Axiomas de zurich pdf' and mentions the wkhtmltopdf generator, suggesting a lure to a fake document. The primary heuristic identified a link farm strategy, indicating a likely attempt to drive traffic to various hosted PDF files.

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://dancinggoatsanctuary.com/uploads/1/3/0/8/130814623/130814623.html#axiomas+de+zurich+pdf
    • http://jessica-carlson.com/uploads/1/3/0/4/130435914/4707984.pdf
    • http://mobitour.net/uploads/1/3/1/4/131437420/c2d988.pdf
    • http://amplifydunedin.com/uploads/1/3/0/7/130776077/gademonuw_tawaxegurile.pdf
    • http://cgrp2013.com/uploads/1/3/0/6/130621185/2936495.pdf
    • http://haleyshandmadeco.com/uploads/1/3/1/0/131070332/c56696416dbd0a9.pdf
    • http://jessica-carlson.com/upl
    • 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_off000092fd.bin
4806a2767200b2e22dedbf18a975d65a461cc3ac7c73b9d0945541868681a60b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92FD 10796 bytes

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