Malicious PDF — malware analysis report

Static analysis result for SHA-256 c66d1a0ed96c19b9…

MALICIOUS

PDF

39.3 KB Created: 2020-03-07 11:44:00 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a805ffbe552fe0e90c9053c6eecdee8e SHA-1: 127347ef60d3955581dd9a71d9cee6215aae12ba SHA-256: c66d1a0ed96c19b9e20aeb00e8545abaad578cd69275272454fed6a735788b1f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link T1059.001 PowerShell

The PDF contains a large number of external links, many of which point to similarly structured URLs on different domains, indicating a link farm or SEO poisoning tactic. The document body, though partially corrupted, contains text related to 'Paracetamol pediatric dose per kg' and metadata suggesting it was generated by wkhtmltopdf, which can be used to create fake documents. The primary intent appears to be directing users to malicious websites, likely for phishing or malware distribution.

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://empiremanagementdetroit.com/uploads/1/3/0/2/130291975/130291975.html#paracetamol+pediatric+dose+per+kg
    • http://dafyjor.store/uploads/1/3/0/2/130291588/jiwufirevuposo.pdf
    • http://baylymarketing.com/uploads/1/3/0/7/130775584/vovimozali_gutaduvimuzuwap.pdf
    • http://dire.group/uploads/1/3/0/8/130813799/baxipazediwefivixigi.pdf
    • http://paydaylendinginvestigation.com/uploads/1/3/0/7/130775728/xobolafuxaxux_domanakowezepib_xuwixebixoj.pdf
    • http://allworldphonecalls.com/uploads/1/3/0/7/130776168/lasabuzutarafat.pdf
    • http://admin.memoria.ai/uploads/1/3/0/6/130604724/3031128.pdf
    • http://pokercasinofebruary.com/uploads/1/3/0/4/130435646/xuwenurujef.pdf
    • http://lagravinesejewelersofarizona.com/uploads/1/3/0/7/130776324/8018364.pdf
    • http://intr.link/uploads/1/3/0/6/130621776/velodoxofo.pdf
    • http://suncatwatersports.com/uploads/1/3/0/7/130775977/xetomuvulepizesiz.pdf
    • http://colorbrushcanvas.com/uploads/1/3/0/4/130483232/wazovetubuwaxulokugo.pdf
    • http://la-screenranter.com/uploads/1/3/0/2/130287538/wuxoritiratumes.pdf
    • http://beleeflaos.be/uploads/1/3/0/6/130620849/6694170.pdf
    • http://bmsbookkeeping.net/uploads/1/3/0/2/130289502/jijol.pdf
    • http://the-urology-clinic.com/uploads/1/3/0/5/130551132/jafetaxavuvinik_legela.pdf
    • http://outoftheoilbox.com/uploads/1/3/0/2/130288854/fikasi.pdf
    • http://ruebird.com/uploads/1/3/0/7/130775413/f9f6212f6e97.pdf
    • http://hashtagbottles.com/uploads/1/3/0/4/130483178/fodopebob.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_off000072b4.bin
99fea9e8b59df1c7af946c871c039dcc180157c2b61bee46e7f56e88dfa4a5db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B4 7400 bytes

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