Malicious PDF — malware analysis report

Static analysis result for SHA-256 386fd715e5648aca…

MALICIOUS

PDF

80.0 KB Created: 2021-08-10 21:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: d7ad007f53907cb86e687b1e85e73160 SHA-1: 0534f917bc80ba213484f6416b192e20000f165f SHA-256: 386fd715e5648aca6c9488bf2be7e8a496837527a418cba9ce03313f10c1d237
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress upload directories and other disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8273

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://crysiq.ru/uplcv?utm_term=what+bodies+of+water+are+found+in+the+philippines PDF link annotation
    • https://ajitcoatings.com/uploads/voloru.pdfIn PDF document text
    • http://caratow.eu/userfiles/file/wobabularimu.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160859d597fce9---gojunike.pdfIn PDF document text
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f07489ea4fb---lizuxeboref.pdfIn PDF document text
    • http://www.herbertvanderbrugghen.nl/draft/sejopixudo.pdfIn PDF document text
    • http://bizbecho.com/pa/trainstation/uploads/image/file/34219533457.pdfIn PDF document text
    • http://bennett-legal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/setovosixupo.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160771dc24068f---runavutarodezidofibanol.pdfIn PDF document text
    • http://hgbs.de/userfiles/file/48972922297.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba79e2ba22e---94774550054.pdfIn PDF document text
    • https://weyergans-hcc.lv/userfiles/file/97935077053.pdfIn PDF document text
    • http://kepco-group.com/uploaded_files/userfiles/files/govomiso.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609449d7db5a3---rinegefumexivamasibomo.pdfIn PDF document text
    • http://www.kizkulesikizogrenciyurdu.com/public/ckfinderuploads/files/suxupitazawolowijisamato.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef1ff0d844---44012167759.pdfIn PDF document text
    • http://dashoernerboot.de/userfiles/dixonilido.pdfIn PDF document text
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/86r64nie5t8l8pdsir7s74u8fe/nupasitenujolu.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161050e36d5fa3---58138777180.pdfIn PDF document text
    • https://floridainvestment.cz/files/file/nepekit.pdfIn PDF document text
    • http://npxbyy.com/wang3_3_10_27/Upload/Upload/file/202183750431292.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/nv002ceaf8gdc1nn3s9ntqaquv/6830439974.pdfIn PDF document text
    • http://nbnjl.com/userfiles/files/91011475358.pdfIn PDF document text
    • http://dzstock.com/Upfiles/file/fovijokiropuwizinas.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/659fvtnof0lm8hefm0feh8cacp/68809954167.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001259f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1259F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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