Malicious PDF — malware analysis report

Static analysis result for SHA-256 3921c376a72ccf30…

MALICIOUS

PDF

42.6 KB Created: 2020-03-24 21:38:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 90ca9b251a8f046f7c2b0c854b201172 SHA-1: c698dac0ca76bb1da6eb13e67d013e25f5197a60 SHA-256: 3921c376a72ccf304ac9d4fc13b6aa3d2954e029d9bac76a15fc45dccc62d614
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO link farms or to direct users to malicious content. The document body, while containing some garbled text, also includes the URL http://keatingphysicaltherapy.net/uploads/1/3/0/4/130489437/130489437.html#cuales+son+los+animales+carnivoros+imagenes, suggesting a lure to a specific topic. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates this is a link farm designed to manipulate search engine rankings or distribute traffic to potentially harmful sites.

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://keatingphysicaltherapy.net/uploads/1/3/0/4/130489437/130489437.html#cuales+son+los+animales+carnivoros+imagenes
    • http://www.moore-marketing-solutions.com/uploads/1/3/0/5/130540401/ledunalomos.pdf
    • http://karifoxholistichealth.ca/uploads/1/3/0/9/130969791/fisipowejema.pdf
    • http://somethinghoppy.com/uploads/1/3/0/7/130739578/00ff614f6.pdf
    • http://balticadventure.nl/uploads/1/3/0/4/130483300/6423855.pdf
    • http://consistentlyluckycharters.com/uploads/1/3/0/2/130289792/wutivejotojudit.pdf
    • http://consciousspirithealing.com/uploads/1/3/0/8/130814666/gadedezogev.pdf
    • http://bacalandersengarrison.com/uploads/1/3/0/5/130544872/todatapuvudafesuzot.pdf
    • http://lansdownewritersworkshop.com/uploads/1/3/0/6/130622075/zoxofekaw-manuto.pdf
    • http://hostmaster.ashwins.co.uk/uploads/1/3/0/2/130274267/8423909.pdf
    • http://mta-sts.mx.citizensforcappleman.com/uploads/1/3/0/5/130543667/4445975.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_off00007a95.bin
b6aaa9b121af3c36ffa1a23437142d25219a01b94ac46278a5e3f593a30c26c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A95 9108 bytes

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