Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ea4a73d87c9a37…

MALICIOUS

PDF

42.4 KB Created: 2021-06-10 09:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 50747ca110cc558d825c179a7b9ff0fd SHA-1: b247cc548890dddedacba3ca581acc5ee8593b3e SHA-256: 96ea4a73d87c9a379c5bbc287f44753e47b1aa3443a5372b1c63b51d28e47aef
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7763

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 2 text block(s), carries a click-outward action, and is only 42 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://huntic.ru/uplcv?utm_term=kabir+singh+full+movie+download+hd+720p+filmywap+com PDF link annotation
    • http://aelma.com/sites/default/userfiles/file/92981763918.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606caf97d6ca8---jitulawojaxaxowamo.pdfIn PDF document text
    • http://lookkorea.net/userfiles/file/5859365408.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ac032bed534---89170011333.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/ao252unv56uapql1q7nnrt67ls/21469504208.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/of8igv2101aq8g63916ui7mmq6/vevogusuvufavelipanik.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/77794436575.pdfIn PDF document text
    • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/2fb3f66bf240a0f15f5c8463b369768e/rufurelupumuf.pdfIn PDF document text
    • https://beautyyaurient.com/editor_upload/file/94778969167.pdfIn PDF document text
    • http://ncdesign.it/userfiles/files/videkeniduxo.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/451320511de1ba1bafa9bf17e817a1dc/xupaxisoweg.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/gsj02nfvaurcev829gjb01prv3/3092818949.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021043005081973499.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/t6qq7abirrucdbi5sk0s2tkesr/53951091262.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a8f3771cb25---fosirawe.pdfIn PDF document text
    • http://allmedicus.com/userfiles/file/jojosivanidiwosexitob.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2695143669---20027460274.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf9f9dc445c---fobisujakixoweketitunafex.pdfIn PDF document text

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