Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0006c9793c8633d…

MALICIOUS

PDF

67.0 KB Created: 2021-07-19 09:16:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: b634fb417287191269d9ae377d593270 SHA-1: 0e53caedc97de92c3dcabb854e87735fbb8cc9f5 SHA-256: b0006c9793c8633de56d95761c4995d0f6cc18cc74a2a863f0da64671bbdc828
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, and it contains embedded JavaScript. The PDF also includes numerous links to compromised WordPress sites and other disposable hosting, suggesting it is part of a link farm designed to redirect users to malicious content. The presence of embedded JavaScript indicates an attempt to execute code within the user's browser or PDF reader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5460

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://akicgiyim.com/userfiles/file/zigavafe.pdf In PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8a57c0df30---37009027909.pdfIn PDF document text
    • http://colorfulmedia.de/fotki/fotki/file/89463372304.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b768cb22455---vuxov.pdfIn PDF document text
    • https://securitydm.rs/slicice/file/66651216576.pdfIn PDF document text
    • https://www.letspassdriving.co.uk/wp-content/plugins/super-forms/uploads/php/files/2ahl2blf14itmh30d801i8pge6/momobo.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3660c18df1---savokelegajusokaxufefurej.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b76c4db48f6---56505214915.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/8bc3c728e4d12096768ab160dddb9a40/18451246164.pdfIn PDF document text
    • http://netcentricnj.com/ckfinder/userfiles/files/bixudonaz.pdfIn PDF document text
    • http://www.alrafeef.com/faisaliya/js/ckfinder/userfiles/files/pazileza.pdfIn PDF document text
    • http://ddaengshop.com/ckupload/files/wanupekibajav.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c86e6307f6c---25233412806.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/mqerj1ab9r8k3c60kfffkalqv6/bezixebobi.pdfIn PDF document text
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/58636223129.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/74830077690.pdfIn PDF document text
    • http://maxgear.cz/webpagebuilder/ckfinder/userfiles/files/69352630023.pdfIn PDF document text
    • https://hirurgija.me//files/kimuzudowivaniru.pdfIn PDF document text
    • http://rcot.by/pics/files/11338323509.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdbfe78a033---3095821508.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072eff6b8c3c---gagosevupijorivilenorule.pdfIn PDF document text
    • http://emauto.lv/index/images/up/file/figekovasipenipapesaxokof.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce7bc970b3---22635757540.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/okpri86pri003pbnubo06bet37/semituvof.pdfIn PDF document text
    • https://amadesafar.ir/basefile/amadesafarir/files/rulupebujezukureko.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=conflict+theory+of+deviancePDF link annotation

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