Malicious PDF — malware analysis report

Static analysis result for SHA-256 cddaae5045e4f4e4…

MALICIOUS

PDF

39.3 KB Created: 2020-03-22 05:01:07 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fe808f1a1848671511c9b67e106741c9 SHA-1: 5b6d385ce04187c93b4fe5db4556a6a109cd0349 SHA-256: cddaae5045e4f4e4c90cbdef17db3d23efc70389cd9e2cf3b9d502dc4b3bb8b0
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary link points to 'http://bridgestreampublishing.com/uploads/1/3/0/2/130272985/130272985.html#tipos+de+sistemas+de+ecuaciones+segun+sus+soluciones', which is part of a link farm strategy. The document body text is heavily obfuscated and contains numerous URLs pointing to various domains, suggesting a coordinated effort to redirect users. 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://bridgestreampublishing.com/uploads/1/3/0/2/130272985/130272985.html#tipos+de+sistemas+de+ecuaciones+segun+sus+soluciones
    • http://www.menongoldstein.com/uploads/1/3/0/5/130590496/jekevexemos.pdf
    • http://thcayurvedics.net/uploads/1/3/0/3/130379503/1b000ef8.pdf
    • http://moontowerdyeworks.com/uploads/1/3/0/6/130621273/6021681.pdf
    • http://northsidesurplus.net/uploads/1/3/0/2/130287919/1734009.pdf
    • http://dmbpromotions.com/uploads/1/3/0/4/130436285/710684.pdf
    • http://ns2.arcasdesigns.com/uploads/1/3/0/2/130288731/82a14ead5e2b85.pdf
    • http://bloomforgoodsocialmarketing.com/uploads/1/3/0/6/130620893/zilaf.pdf
    • http://monicamandell.com/uploads/1/3/0/2/130289365/mirevimedotel-gareraj.pdf
    • http://lashspellsd.com/uploads/1/3/0/6/130640208/sopimexivav_zuleke_jabubuli.pdf
    • http://threeoakwinery.com/uploads/1/3/0/4/130435937/zojopukoxunil_jamukiruvumake_weporikojejog.pdf
    • http://pennington-automotive.com/uploads/1/3/0/6/130620694/pajolanosik-koraxagagefe-kapefizu.pdf
    • http://beerhappydesigns.com/uploads/1/3/0/7/130738854/4342338.pdf
    • http://yachtsteak.com/uploads/1/3/0/5/130544541/kuzegopigil.pdf
    • http://ufoheadlines.com/uploads/1/3/0/6/130605399/laxogutufelawajibe.pdf
    • http://hostmaster.argall.co.uk/uploads/1/3/0/6/130621530/6034aa78d1.pdf
    • http://www.twolovebirdsphotograhy.com/uploads/1/3/0/8/130813427/jotumanojajezo-zogiradejefodar-sorusefereg-gotebilenegu.pdf
    • http://ilovemoostudios.com/uploads/1/3/0/6/130639298/4644023.pdf
    • http://kembyshiroshima.com/uploads/1/3/0/5/130539059/buxozaguku.pdf
    • http://fourpops.com/uploads/1/3/0/4/130478551/896870.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_off00007066.bin
6f4787f5329c8f4f10a1c283407ae5e9ceb8b04bdbfc2400b8ad4b09c680976a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7066 7964 bytes

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