Malicious PDF — malware analysis report

Static analysis result for SHA-256 c598b5ca40a567b6…

MALICIOUS

PDF

45.0 KB Created: 2020-03-11 06:47:46 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 46b03234e8a60706dabaf196901e6eea SHA-1: 7cab9a7af74de3032dac7b3b5c526bd997e4bbda SHA-256: c598b5ca40a567b63ffe0c52da0d04d62bf098eaabaf4d14b55f49595d1500b9
62 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to similarly structured URLs on different domains. The primary URL directs to a page that appears to be a lure for 'academic phrase bank manchester university'. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a link farm or SEO abuse tactic. The embedded URLs are likely used to redirect users to malicious content or phishing pages.

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://74-123-76-170.mgwnet.com/uploads/1/3/1/1/131164313/131164313.html#academic+phrase+bank+manchester+university
    • http://www.mayatcrawford.com/uploads/1/3/0/6/130604294/vanamijidono-likif-rabivegilo.pdf
    • http://grantluther.com/uploads/1/3/0/2/130289569/baae73.pdf
    • http://netherlands-korea.com/uploads/1/3/0/5/130550944/vatod.pdf
    • http://abbylauter.com/uploads/1/3/0/5/130542769/duminelisudu-fivul-gefirojufa-takujikuvatexis.pdf
    • http://sacred-journeys.net/uploads/1/3/0/7/130775197/8623096.pdf
    • http://www.lacrosse360.shop/uploads/1/3/1/0/131070168/ef7ab61b5a23.pdf
    • http://snli.co/uploads/1/3/0/5/130590739/xuwevetevukiv_takejomin.pdf
    • http://layeshawalton.com/uploads/1/3/0/5/130543402/nolalovarekap_kupisawa_midepulekofe.pdf
    • http://nrbardwell.com/uploads/1/3/0/2/130288673/c5926dec02b3ae.pdf
    • http://socialoverlay.net/uploads/1/3/0/6/130621412/5ea4df63b8.pdf
    • http://www.lesleykimfineart.com/uploads/1/3/0/4/130435898/4181694.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_off0000889f.bin
1b121fc47056efb56626d6e7798558633306441a2f4e63d1c856d2b6acd7b345		 pdf-font-stream PDF embedded font (sfnt) at offset 0x889F 7908 bytes

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