Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac86d321bc055990…

MALICIOUS

PDF

39.6 KB Created: 2020-04-01 14:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c1b836921b402b353c910edfb5ca33d7 SHA-1: 03f46613c60bdb535fb20d7fb48adc31f55b5407 SHA-256: ac86d321bc0559901a3e3320d22776d3cdea9adc0abe0e7bf973bc878cc29d73
92 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier as malicious. It contains a large number of external links, many of which point to PDF files on various domains, suggesting a link farm or redirection scheme. The primary purpose appears to be SEO manipulation or directing users to potentially harmful content through these numerous external links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://dimpsgroundworks.com/uploads/1/3/0/8/130874077/130874077.html#las+batallas+en+el+desierto+analisis+critico
    • http://coloradoinsulationcompany.com/uploads/1/3/0/9/130969813/7372127.pdf
    • http://captaingoogoo.com/uploads/1/3/0/4/130476266/bomuviladusuxez.pdf
    • http://hannaelyse.com/uploads/1/3/0/6/130603842/xuzoxi.pdf
    • http://eleftheriadoukallia.com/uploads/1/3/0/2/130291910/6fe9ca800d19.pdf
    • http://andycandy.co/uploads/1/3/0/7/130775776/7d36b2d4fef07e7.pdf
    • http://icon-elec.com/uploads/1/3/0/5/130541817/2a0b2cbfa9f8.pdf
    • http://alexrosencutter.com/uploads/1/3/1/1/131164027/8724023.pdf
    • http://onlinenetwerken.info/uploads/1/3/0/8/130814448/545d560d0e3042.pdf
    • http://drhenne.com/uploads/1/3/0/3/130323527/xexiwowej.pdf
    • http://youmanize.com/uploads/1/3/1/1/131164236/dc3a1d3f1.pdf
    • http://www.365roadsideassist.com.au/uploads/1/3/1/0/131070051/movatatajatafobuzob.pdf
    • http://abelcider.net/uploads/1/3/0/2/130289573/vifabozotudu.pdf
    • http://secondhand-kidsclothing.com/uploads/1/3/0/8/130814172/jovuna.pdf
    • http://darwinleon.com/uploads/1/3/0/6/130639661/wepobajusemo_zavejazugagan_nejagapiwik.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_off000070d2.bin
d02d6117e3345ca151eadfddba5cc31a3881eb3fd75b1bce804d6a3b17b65388		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D2 8812 bytes

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