Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d7838a66a0e7193…

MALICIOUS

PDF

62.2 KB Created: 2021-07-27 01:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 0ec79c026784e83b02e50b203c1b5559 SHA-1: 8a87fe07c8df95170b6e5929f086762db270880f SHA-256: 9d7838a66a0e7193fd87a6ca6b5b1605549f9089eee76068fc2574e0844d19e7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7024

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://kawanmto.info/contents//files/64341410534.pdf In PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160752dce15400---fedixibusago.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160860348c8a1c---35063869382.pdfIn PDF document text
    • https://nusantarabet4d1.com/contents//files/mitebi.pdfIn PDF document text
    • http://carnavaldemarbella.com/Senegal_5/Content/files/userfiles/file/bimewuwitosasopokobavowa.pdfIn PDF document text
    • http://strandedtattoo.net/file/31309451315.pdfIn PDF document text
    • https://tenekedjieva.com/uploads/file/82950591121.pdfIn PDF document text
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/f4a33114e27329da4cb51f972841d6b4/xizunonalekot.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/5b9c7f0dc9ec0afebf6711f22d41fbba/17425517652.pdfIn PDF document text
    • https://arerp.kr/data/file///56591226810.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b86e5ac0009---voragutufapewufojoxafi.pdfIn PDF document text
    • http://pileshoppen.dk/userfiles/file/69945687060.pdfIn PDF document text
    • http://xn--80aamdqpfpr.xn--p1ai/upload_picture/pomivozev.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091b29b125cf---33788648942.pdfIn PDF document text
    • http://drive4smilesontario.com/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/dusedame.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/97d7ac5a4b989482470e1336125ab383/gazelutenepogavajugorakij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=tulsa+county+district+court+records+searchPDF link annotation

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