Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaa74bb4b3147e48…

MALICIOUS

PDF

41.8 KB Created: 2020-03-07 14:24:02 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4be4403eab72b8783e8f2b341546f57f SHA-1: 8769249789b47819989523d21f68af215c34348c SHA-256: aaa74bb4b3147e486ae3e55a0b24f9e747e91fd2e7327970a4c571138c9594fd
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or SEO manipulation tactic. The document body contains garbled text related to 'Brachial plexus injuries types' and the authoring application 'wkhtmltopdf', which is likely a lure or obfuscation. The primary attack pattern involves directing users to a multitude of external resources.

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://shopbelfast.info/uploads/1/3/0/4/130436272/130436272.html#brachial+plexus+injuries+types
    • http://chloepictures.com/uploads/1/3/0/4/130488946/tewafaxedilo_sowezuzirogamup.pdf
    • http://momentumwomenscenter.com/uploads/1/3/0/6/130620265/5232576.pdf
    • http://unionwelder.com/uploads/1/3/0/5/130590279/lezuxuxafomoj_guxepepaxepol_gusibuxegulo.pdf
    • http://speakenglishnaturally.me/uploads/1/3/0/5/130550956/zibubimefiposudud.pdf
    • http://www.kasiawolyn.com/uploads/1/3/0/2/130289792/d9aa70.pdf
    • http://nateveorganic.com/uploads/1/3/0/2/130287538/jupumegojikabitedate.pdf
    • http://milissweetstogo.com/uploads/1/3/0/8/130814234/2322252.pdf
    • http://noraleefashion.com/uploads/1/3/0/7/130740598/puxodoniz.pdf
    • http://tonypandytaxiservices.com/uploads/1/3/0/6/130604295/bapifedewuwelum.pdf
    • http://ceasefireretreat.org/uploads/1/3/0/4/130476594/fefudibotesuniw_tasoma_wejizewubi.pdf
    • http://ardsleylatin.org/uploads/1/3/0/5/130551053/vifemib.pdf
    • http://wbagi.com/uploads/1/3/0/7/130775551/5392651.pdf
    • http://mikeandthebigscary.com/uploads/1/3/0/7/130775797/suxulakapuxikapu.pdf
    • http://theartofiray.com/uploads/1/3/0/3/130323762/gozarexo.pdf
    • http://inshopper.site/uploads/1/3/0/6/130604231/sokutuvi.pdf
    • http://caylahwestphotography.com/uploads/1/3/0/7/130775256/4278558.pdf
    • http://soscharityservices.com/uploads/1/3/0/5/130590435/3526282.pdf
    • http://ashleighvaillancourt-winebrenner.com/uploads/1/3/0/5/130588346/6186224.pdf
    • http://emmawatkinson.co.uk/uploads/1/3/0/2/130287424/38743.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_off00007cfc.bin
3d9a92c3a4e7b6f0210bfbffa172917d4456230cb81f0b425334378e5d54279e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFC 7424 bytes

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