Malicious PDF — malware analysis report

Static analysis result for SHA-256 a05268f2ae9718f4…

MALICIOUS

PDF

44.4 KB Created: 2020-03-27 05:38:35 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 77faa108f803f21dac9c0a4610dd5e2a SHA-1: af77746778110b1ac2e8033a9f7379652e31fa34 SHA-256: a05268f2ae9718f443a7f1d5d87b2501ee2f6e4a7f1c7f21f04c4ddee9761e2a
62 Risk Score

Malware Insights

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

The PDF file contains a large number of 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 spam operation. The document body contains the text 'Mgus monoclonal gammopathy of uncertain significance icd 10', which appears to be a lure to make the document seem legitimate. 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://ebmccallanbuildingltd.com/uploads/1/3/0/9/130969192/130969192.html#mgus+monoclonal+gammopathy+of+uncertain+significance+icd+10
    • http://stolk.pl/uploads/1/3/0/2/130270866/7945449.pdf
    • http://drazenbuntic.com/uploads/1/3/0/2/130272918/885cc1c999e2.pdf
    • http://challengingshakespeare.com/uploads/1/3/0/3/130379465/wadujejaf.pdf
    • http://kphevents.com/uploads/1/3/0/6/130604372/be79f.pdf
    • http://paulabelikove.com/uploads/1/3/0/6/130621788/xuvadu_rubodutalo_pepavizug_daxijuxenowa.pdf
    • http://winecountryeventsguide.com/uploads/1/3/1/1/131164352/588880.pdf
    • http://starhighschool.com/uploads/1/3/0/4/130435843/2996413.pdf
    • http://sweetgabrownbbqsauce.com/uploads/1/3/0/6/130603748/rulolunikakuv-lisisoluzix.pdf
    • http://www.hicksandsonsatl.com/uploads/1/3/0/9/130969639/kesofukigiba-bekudun-rogafit.pdf
    • http://testpages.online/uploads/1/3/0/8/130874077/tilifamirenovor.pdf
    • http://ruichaoyuan.me/uploads/1/3/0/6/130639256/tuxebajipaz.pdf
    • http://galvanizeent.com/uploads/1/3/0/6/130604108/abdbd66a422756.pdf
    • http://www.imareesbabies.shop/uploads/1/3/0/6/130620778/f9bb53.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b7e.bin
fb57bdd3eeb2304c8245437a5e081f3b4e71438959df3efe3975cf2b4fdd37ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7E 8004 bytes
font_01_sfnt_off00009a49.bin
1110447959503c75238c0f1bcdf9de7fad567fc767730a4530dcb0d3a64541bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A49 2696 bytes

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