Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a235a1ed0090d2d…

MALICIOUS

PDF

73.4 KB Created: 2020-03-10 08:41:03 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: de26559bfd45920e73a1c6299a61f95a SHA-1: 8779252899f7fd7d9eb6339739998b13475eee9c SHA-256: 7a235a1ed0090d2d56f82d2ec613dc93c4c8c930003ea40e08273d9a16ba7eea
70 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are structured as SEO-optimized PDF links, suggesting a link farm. The document body mentions 'Sage accpac system manager user guide', which is likely a lure to encourage users to click on the embedded malicious links. The primary heuristic indicates a PDF URI pointing to an HTML file, and another heuristic flags a large number of external PDF links, indicating a link farm. The SE_INVOICE_LURE heuristic further supports the idea that the document is designed to trick the user into clicking.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://electronauticadelta.com/uploads/1/3/0/7/130776267/130776267.html#sage+accpac+system+manager+user+guide
    • http://persucarhipa.net/uploads/1/3/0/5/130589047/4665445.pdf
    • http://carestreamdl.com/uploads/1/3/0/2/130288753/4508747.pdf
    • http://cataniainunclick.com/uploads/1/3/0/7/130740573/luvuma.pdf
    • http://vipcarenannies.com/uploads/1/3/0/9/130969424/rewewatu-wasadokut.pdf
    • http://myultimatecuts.com/uploads/1/3/0/3/130379803/didedovikas.pdf
    • http://lapsonsplace.com/uploads/1/3/0/7/130775033/08dd554c31.pdf
    • http://jobs.ridgemontresources.com/uploads/1/3/0/9/130969427/moxoxevofuzatawe.pdf
    • http://nadiacorson.com/uploads/1/3/0/2/130291779/memisokebirogub_jamogolizeg.pdf
    • http://narrins.com/uploads/1/3/0/7/130776811/zugutamuva.pdf
    • http://www.hotelreservationscompare.com/uploads/1/3/0/5/130546244/dozalumuje_suveduratig_faropemavagaguw.pdf
    • http://mail.swanleeartdesign.com/uploads/1/3/0/5/130590312/1330198.pdf
    • http://charlesjohnstonconsulting.com/uploads/1/3/0/6/130620453/7b771.pdf
    • http://mikkiscreations.shop/uploads/1/3/0/4/130489229/panimomofar.pdf
    • http://moovsterrelocation.com/uploads/1/3/0/6/130604034/b75f88675.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_off0000f50a.bin
2585d3f7882f39c0b67c8e0e9bb45d26d01717044cecc4af45aa82f566e81a8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF50A 9308 bytes

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