Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c0627d2fe1460ff…

MALICIOUS

PDF

40.4 KB Created: 2021-06-17 04:42:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: bc1a7b34120538fb6af628b931d01f00 SHA-1: b25784d036168f087b7c293bf669be1f92e20fbf SHA-256: 9c0627d2fe1460ff30fa6a27d07594db378b71df9471ecf0fd861a89eb54f83c
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains a single image, suggesting a screenshot designed to obscure clickable links. The embedded URLs point to compromised CMS upload directories and disposable hosting, indicating a likely attempt to redirect users to malicious content or download further payloads. The document's structure and numerous external links align with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7992

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://crysiq.ru/uplcv?utm_term=kareena+kapoor+dietician+book+download+pdf PDF link annotation
    • https://kamarkosong.com/contents//files/burifurovelasuwubetugupev.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba7c39d907f---76624617681.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/a8162ea9bbaade881aa1ccf24e5b47f2/86424355053.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/t17uc9b5on3dmjcone1d0csu7h/bedalujupefunuleruviwural.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/ak4i4rvg4giidubv2jfll4uhup/winidekivokomanolevakeg.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/26aa64589267e6932298ac6d0f75f073/8285604798.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-5-7/20210507111937383720.pdfIn PDF document text
    • http://maciejabramowicz.pl/upload/files/file/25645239580.pdfIn PDF document text
    • http://tai-yang.tw/taiyang/upload/file/28146638441.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/3ta5sjc2d7hjlk097q905sssrj/kememen.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160c15d82d4f0b---70664943523.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607a454f91995---92797495211.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/513chak1enda6ppplfj8o9rlsg/tifowarom.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6e0f14178---28454562966.pdfIn PDF document text

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