Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ceb248552f4bcc6…

MALICIOUS

PDF

59.9 KB Created: 2021-07-09 02:49:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 65e893664471da0ac22ff14d319b9b56 SHA-1: 65c93774d84daf960188d291e1d980bef5f9a47c SHA-256: 7ceb248552f4bcc6d2c55a4177ca3cd6e8b5d00d70c90e3e7e085e73297739ca
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains a link farm pointing to multiple compromised WordPress sites, likely intended to trick users into downloading further malware. No scripts were extracted, but the presence of numerous external links suggests a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9526

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 https://medvor.ru/uplcv?utm_term=fmge+solutions+6th+edition+pdf+download PDF link annotation
    • https://bravo-hk.com/userfiles/file/68133009876.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608324425e0ce---vizufozobobezuli.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083909b78f9b---32056760161.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/c458e03c006705ac611bea8bd4b04707/jerumujalejebekisagafonis.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ad0fd6cc512---21718432447.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160984a359d989---25712000415.pdfIn PDF document text
    • http://giaodantanthaison.com/Images_upload/files/kugijagazute.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/hk1fetcep6b4dshqlujn5d1ne1/67426107275.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160788432b13e0---fosasegivo.pdfIn PDF document text
    • http://lucann.com/Upload/file/legumabomat.pdfIn PDF document text
    • http://metabolit-plus.ru/files/file/18166626834.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a47801401f5---97787257509.pdfIn PDF document text
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607196efe3923---venejikotuvuv.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/0beoj4msljj72rukmacfsdo651/40181722410.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b051c25c857---gasikubi.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/7537362951fec94976c06d32584da3c7/14023055590.pdfIn PDF document text
    • https://binarbaidrealestate.com/public_html/userfiles/file/43426978064.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e035bf2b9ee---zokopinijot.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/777ec834ca632d61395e2835c41625cd/vibumowiliwilemupexo.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855fbc0f7d3---10957315997.pdfIn PDF document text
    • http://mottaing.eu/userfiles/files/newirivosevusub.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_off0000be1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE1B 11176 bytes
SHA-256: d07f5322f70ead46d3ea4db052361b0b332431ab1a6ce106eab8d60a949a3188

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