Malicious PDF — malware analysis report

Static analysis result for SHA-256 770131ae6c06c153…

MALICIOUS

PDF

62.1 KB Created: 2021-09-03 00:14:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 4c3fef725b5abc79e90e9dbcb8e12d51 SHA-1: 3baf834970424da290a6b7fa62d5765c2c5c90cb SHA-256: 770131ae6c06c153314592519884b787e4a0889d23d2c846b68aef752c9aebcb
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as a phishing trojan by ClamAV. Static analysis revealed it functions as a link farm, directing users to multiple potentially compromised websites. The presence of numerous links on disposable hosting and compromised CMS upload storage indicates a deliberate attempt to distribute malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3485

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://groupunsur2.com/contents//files/dexekojanadofaxasodevovu.pdf In PDF document text
    • http://pitafest.com/clients/1/13/1337b7689af00ddd847345d48bd720ff/File/57897666597.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4e6ce6faa---luvedolapafosuli.pdfIn PDF document text
    • http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202104291711383168.pdfIn PDF document text
    • http://xahscw.com/userfiles/file/sidajijolovezebebamun.pdfIn PDF document text
    • http://camara.acessoainformacao.org/uploads/ckfinder/files/28725158014.pdfIn PDF document text
    • http://minhphucvietnam.com/uploads/userfiles/file/rorasusitote.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/jazijegulurazi.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/0d3bef781948810dd96aa6f39b577be9/monodupovekitawadotesuro.pdfIn PDF document text
    • https://valubil.com/public/uploads/cms_file/cms_files/88065679567.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160d83860af535---lakonovugozipidowa.pdfIn PDF document text
    • https://nnkcreations.com/userfiles/file/kowobemoniparomawunex.pdfIn PDF document text
    • https://www.jscorporation.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb697b3885---32374643622.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16117c7605fee7---nonoxonilavekigawufati.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2f6eed499e---19375477989.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/09564d43fe5ebd3e68ea5642b0f21210/20175976992.pdfIn PDF document text
    • https://kingwaterpure.com/ckfinder/userfiles/files/16976707011.pdfIn PDF document text
    • http://ovodatar.hu/userfiles/file/tosalopap.pdfIn PDF document text
    • http://netpost.vn/upload/userfiles/files/vevawededuxopiwikesewez.pdfIn PDF document text
    • http://eventcompany.org/clients/e/e3/e30ef11cf4efe639fe6592aa37b9cb94/File/15554189339.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/icfqj59tgrfj6jnps293mgq4j0/logafafovimuxilutuwik.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5a66bc6706---goxabolatiwipukujolo.pdfIn PDF document text
    • https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/613a5292277c130f4aa49effd3bc2c48/xaxapirazagosuxopo.pdfIn PDF document text
    • http://budoprojekt.eu/obrazy/file/sagofekitot.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16082abd2c8379---78539230320.pdfIn PDF document text
    • http://xn--or3bo5mvlb.com/data/editor/file/nidefegunafewe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=blink+camera+user+manualPDF link annotation

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