Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fa61d016c17da9b…

MALICIOUS

PDF

40.4 KB Created: 2020-03-25 01:04:13 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 67c5ea5867b113e8ddaa827f628d567c SHA-1: c88c38118e9de1c8b424b94c5b7e46e4be60a157 SHA-256: 3fa61d016c17da9b0e14eb95229b67bb19c59cd7ff7e3ecbd7b06993e5463e48
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially corrupted, suggests a lure related to 'Salud bucal en niños de preescolar ppt'. The primary attack pattern involves directing users to a vast array of PDF files hosted on numerous domains, likely for SEO spam or to distribute further malicious content. 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://roadshowarchitects.com/uploads/1/3/0/5/130543772/130543772.html#salud+bucal+en+ni%C3%B1os+de+preescolar+ppt
    • http://bearvbaby.net/uploads/1/3/0/6/130622047/1019917.pdf
    • http://mid-americathermalimaging.com/uploads/1/3/0/6/130620439/160969.pdf
    • http://nhfd-dev-site.com/uploads/1/3/0/3/130379167/mepadu_rurilo.pdf
    • http://www.draagbarezuurstofconcentrator.net/uploads/1/3/0/7/130740356/zibetukavoretol_vapevuxibidi.pdf
    • http://www.redt-magic-engraver.com/uploads/1/3/0/9/130969076/1066237.pdf
    • http://noyirionworks.com/uploads/1/3/0/6/130621507/xogowup.pdf
    • http://aurawhiteset.com/uploads/1/3/0/3/130379146/geliliper_wegulixikifa.pdf
    • http://socohomephotography.com/uploads/1/3/0/4/130488470/4208355.pdf
    • http://thegrandyer.com/uploads/1/3/0/2/130271158/91665.pdf
    • http://esmasv.com/uploads/1/3/0/7/130776702/wejimubigopat.pdf
    • http://pdiron.com/uploads/1/3/0/5/130589386/kotixo_lulivunerabazoz_tuzilupelak.pdf
    • http://balonzebarbershop.com/uploads/1/3/0/5/130588511/70efc177c8dd.pdf
    • http://wildcream.com/uploads/1/3/0/2/130287527/modazidel.pdf
    • http://nicolealana.com/uploads/1/3/0/8/130873779/torewemu.pdf
    • http://www.longshadowvanlife.com/uploads/1/3/0/5/130589189/91504f.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_off000072e4.bin
33be0bed700a10d02a6161ec940195f06d3e7e1be75303d4f3a99a0fde0d1fe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E4 8712 bytes

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