Malicious PDF — malware analysis report

Static analysis result for SHA-256 064929c336df0a14…

MALICIOUS

PDF

58.6 KB Created: 2021-09-17 04:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: cb0b56945e50bdc75c3a208214288dfe SHA-1: 221d5c7f42b383e1bc9a8e437871574ce8582553 SHA-256: 064929c336df0a14f1ff2c381dd66a962ca4fe04fa4e31b20295594fd9f91b8f
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is often used to obfuscate malicious content or redirect users. Several heuristics indicate the PDF is part of a link farm hosted on compromised WordPress sites, aiming to trick users into downloading further malicious files. ClamAV detection as Pdf.Phishing.Trojan confirms the malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

Heuristics 6

  • 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.
  • 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 https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/c6696e8d3dfb5b4b9e1400a7fe25e0eb/4698094043.pdf In PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f59b8a4698---sitov.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1613ea31212c6e---50354142367.pdfIn PDF document text
    • http://spl-designs.com/ckfinder/userfiles/files/61221282835.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/dawolulu.pdfIn PDF document text
    • https://camgloberealtor.com/userfiles/file/76641283152.pdfIn PDF document text
    • http://timnhanhonline.vn/upload/files/wedakorisujoxiz.pdfIn PDF document text
    • https://nicklason.se/ckfinder/userfiles/files/pavixabenumipidali.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/19d31200fba88af3691fb9b6f383a1aa/21075134862.pdfIn PDF document text
    • https://www.bbmnetlicitacoes.com.br/cms/ckfinder/upload/files/xumowiwebidozer.pdfIn PDF document text
    • https://ascend.sut.ac.th/ce/2017/src/plugins/ckfinder/userfiles/files/namuridan.pdfIn PDF document text
    • http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/jozebasapotefisenaj.pdfIn PDF document text
    • https://hantverkarenisandby.se/UserFiles/files/nelupusogepusuzalexupunu.pdfIn PDF document text
    • https://mimzyonline.com/userfiles/file/rimibituw.pdfIn PDF document text
    • https://mokhalasati.com/userfiles/files/nomumafo.pdfIn PDF document text
    • https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161300bb2766f7---zesabarepobolam.pdfIn PDF document text
    • http://tt-ural.su/admin/ckfinder/userfiles/files/38969253517.pdfIn PDF document text
    • http://safetyassessmentsolutions.co.uk/ckfinder/userfiles/files/mugutumenizakuranaw.pdfIn PDF document text
    • http://koyomisushi.com/uploads/files/miwixuzinibomopa.pdfIn PDF document text
    • http://verynailscm.com/user_img/file/dutafalosidasivosaz.pdfIn PDF document text
    • http://bjsixiang.com/jingkelun/userfiles/files/20210914082935.pdfIn PDF document text
    • http://travelci.ru/ckfinder/userfiles/files/fepijusuxetajodemigosuf.pdfIn PDF document text
    • http://orchid-daikanyama.com/userfiles/file/sedafidiwokelojulijurojig.pdfIn PDF document text
    • http://www.ramseier-appenzell.ch/elrada/js/ckfinder/userfiles/files/bisazazagawigarimo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=totok+apk+file+downloadPDF link annotation
    • http://alessandrotria.altervista.org/areap/ckfinder/userfiles/files/regogibope.pdfIn PDF document text

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