Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7f38429cdd5850…

MALICIOUS

PDF

62.3 KB Created: 2021-09-17 08:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: d7de473a11e3a98bf8e2fbd37d63035a SHA-1: 311f56884ce2efd43cdea216202459d2e90c69d7 SHA-256: 7c7f38429cdd5850fb910950a37a5bcd32d09ac945a392a444522cefc9411eb0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to external websites, some of which are hosted on compromised CMS upload directories or disposable domains. The primary purpose appears to be directing users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5897

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://pixomot.ru/uplcv?utm_term=technocare+tricks+crashed PDF link annotation
    • http://duancanhotot.com/upload/files/xanutaligolaj.pdfIn PDF document text
    • https://hse.tw/upload/file/rogowuxafixodiwufugola.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613100ffd7186---84865035659.pdfIn PDF document text
    • http://viral-list-monster.com/ckfinder/userfiles/publics/files/betafakezetali.pdfIn PDF document text
    • https://mavachhaiphong.com/upload/files/22783267077.pdfIn PDF document text
    • http://xzass.org/ckfinder/userfiles/files/53302579117.pdfIn PDF document text
    • http://artanuji.ge/admin/ckeditor/ckfinder/userfiles/files/77016051860.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e0da69260228b6b590a8921d48cbc9c5/50982813545.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16143951fa3bf2---newuzutesaxapudupemetij.pdfIn PDF document text
    • http://boletos.luzservicos.com/ckfinder/userfiles/files/zuwirurepigalesowu.pdfIn PDF document text
    • http://buyyoutubecomments.com/ci/userfiles/files/baxogigorizawida.pdfIn PDF document text
    • http://immobilieninvestors.de/userfiles/file/bafepenedopete.pdfIn PDF document text
    • https://chorland-dining.com/webroot/editor-uploads/files/79162993674.pdfIn PDF document text
    • http://uptindia.com/newsimages/file///57005501652.pdfIn PDF document text
    • http://kraski-chernila.ru/resources/file/5674463129.pdfIn PDF document text
    • https://vantainoidia.vn/ci/userfiles/files/58699638094.pdfIn PDF document text
    • http://mylodge-naoshima.com/images/blog/file/79768048773.pdfIn PDF document text
    • https://mashtalkandil.com/userfiles/file/lamubimaxumomizibuni.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/mumivebot.pdfIn PDF document text
    • https://korzayithalat.com/spot/admin/fckeditor/userfiles/file/fuwifejigi.pdfIn PDF document text
    • http://benrassam.com/uploads/files/4050955236.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/orf16aro2q6oafq1nv8se3ebc4/rodibomoboxuzoputoxipo.pdfIn PDF document text
    • http://hwayoung.kr/upfile/files/39358192106.pdfIn PDF document text

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