Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d029509bb6b3ff4…

MALICIOUS

PDF

45.6 KB Created: 2021-10-04 00:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 32095f0c3c92dfdd4f8a2e77b0275231 SHA-1: 93a11f0abf218fa58eed030c153d08051dc91630 SHA-256: 5d029509bb6b3ff4853bf3b4af6278e6922e6ba48456da266a5ab792b1bf2fa2
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS uploads, indicating a link farm designed to distribute malicious content. The presence of embedded JavaScript further suggests the potential for exploitation or redirection. ClamAV detection as 'Pdf.Phishing.Trojan' reinforces the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7790

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://ketchas.ru/uplcv?utm_term=neck+and+shoulder+stretches+for+stiff+neck PDF link annotation
    • http://bixenony.com/userfiles/files/gobazuzesevedumutit.pdfIn PDF document text
    • http://446888.top/userfiles/file/73085883.pdfIn PDF document text
    • https://afmiletisim.afmiletisimajansi.info/resimler/files/bemawevojufisapoga.pdfIn PDF document text
    • http://classtool.info/upload/files/45053847100.pdfIn PDF document text
    • http://xn--80aafbkbafwdti1ahihccrg.xn--p1ai/pict/file/20345902028.pdfIn PDF document text
    • http://assushop.com/userfiles/assushop.com/file/gusewalotirezeb.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/b3a7697e2d1892a51db796787b13d906/72931409629.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614ca7fc3e1ec---dokobufutep.pdfIn PDF document text
    • http://www.asiacoservice.com/file/files/50800639035.pdfIn PDF document text
    • http://hitechdentalhouston.com/uploads/files/kusajo.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/32354581285.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/161495abd3d027---76973927100.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/2f3n964bkmm9b7fi3808ge6m90/xelopadikodutagepukajome.pdfIn PDF document text
    • http://otevrel.eu/ckfinder/userfiles/files/36282854368.pdfIn PDF document text
    • https://parkerboat.hu/js/ckfinder/userfiles/files/3329264354.pdfIn PDF document text
    • https://windsbs.biz/files/file/xalit.pdfIn PDF document text
    • https://web-idea.ro/app/webroot/files/userfiles/files/53378223236.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/r434o8kealku9353u5blpqvqkt/12259349559.pdfIn PDF document text
    • https://amigo-shop.105h.net/upload/files/59639029111.pdfIn PDF document text
    • https://mediaget.ru/userfiles/files/momojif.pdfIn PDF document text
    • http://ever-pioneer.com/upload/files/bopow.pdfIn PDF document text
    • http://bollnas.boj.se/uploads/userfiles/files/nazigufunotakofaxatik.pdfIn PDF document text

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