Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d23df7597ea0d99…

MALICIOUS

PDF

46.7 KB Created: 2020-03-10 10:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b5e885a36a6e90b1e6b2c5cd358a7dcd SHA-1: df93f814d87bd29c8e660889bbcb5bd38975c030 SHA-256: 1d23df7597ea0d99d492c748fa88ee3318459fc2252caef8f0b22f11a312618b
92 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains references to physiotherapy assessment forms and wkhtmltopdf, suggesting a lure document. The primary attack pattern involves directing users to a network of linked domains, likely to host further malicious content or phishing pages.

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://38fangguojixianshangyule.br3h.com/uploads/1/3/0/8/130874009/130874009.html#musculoskeletal+physiotherapy+assessment+form+pdf
    • http://maketorontohome.net/uploads/1/3/0/3/130313333/fixesebuzobovaxum.pdf
    • http://historyofamericansignlanguage.com/uploads/1/3/0/6/130621456/savabajisifufez_xadokosirogaje_sudobavo.pdf
    • http://katielyonpingree.org/uploads/1/3/0/7/130739935/5754386.pdf
    • http://northstreamelectricco.com/uploads/1/3/0/7/130776356/wesikuxulazeranefux.pdf
    • http://goatboydesigns.com/uploads/1/3/0/6/130620334/9283592.pdf
    • http://mail.carrollwallace.com/uploads/1/3/0/4/130488544/8d9333ba078fd.pdf
    • http://calyculin.com/uploads/1/3/0/7/130739129/3351197.pdf
    • http://norfolkeventmedicalservices.com/uploads/1/3/0/5/130589002/3877170.pdf
    • http://rusticreflectionsonline.com/uploads/1/3/0/6/130604446/rimozo-xijiwaxowozefim-satirowinax.pdf
    • http://stayusahotel.com/uploads/1/3/0/5/130588712/kizunibef.pdf
    • http://rawopal.com/uploads/1/3/0/9/130969327/molabefuvef.pdf
    • http://slabtownstudios.com/uploads/1/3/0/6/130620910/kerutawudi.pdf
    • http://www.vevey-reveillon.ch/uploads/1/3/0/2/130272234/teguvufatoluwobad.pdf
    • http://www.greenelder.co.uk/uploads/1/3/0/4/130436473/kogob-xamixatit-mawizarebafa.pdf
    • http://lerboristadelconsorzio.com/uploads/1/3/0/8/130813325/bb1521d.pdf
    • http://www.buffalo3studios.com/uploads/1/3/0/4/130476581/wonusodojeziwam-jifaten-budivuxese.pdf
    • http://withwhitandgraceblog.com/uploads/1/3/0/5/130589101/zofola_pemuzezopexajus_vatutoban.pdf
    • http://packleaderk9academy.com/uploads/1/3/0/7/130775320/87023.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_off0000919a.bin
51b1f07893db7b4e528260351536e8482247c4e5fe76b87a194ca5caf2ab0e1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x919A 6872 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.