Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7670927d4827797…

MALICIOUS

PDF

47.7 KB Created: 2021-09-26 15:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: a31d4f17299811c7aa314be7bfae2eb7 SHA-1: cac291162ce7c816c8d5fee54b0c31d5b653b393 SHA-256: d7670927d48277979bb6c6872cd08b8f7b39a874d1d84d074ca7f3b5619c2643
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous URLs, many of which point to compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is a link farm on disposable hosting, suggesting a phishing or malicious redirection attempt. The embedded JavaScript likely facilitates the redirection or further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5801

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://artofsurfing.com/preview/ckfinder/userfiles/files/96670854434.pdf In PDF document text
    • https://zerling.eu/nico/images/files/17131600943.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1614f9ec5ae236---wakifir.pdfIn PDF document text
    • http://avvolodin.ru/upload/file/41092566692.pdfIn PDF document text
    • http://gocep.org/data/userfiles/files/legolomodatani.pdfIn PDF document text
    • http://www.globalnautique.nl/upload/files/mopokatuxajelaxare.pdfIn PDF document text
    • http://autofactory-jin.com/js/upload/files/40903126095.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/ae36847d121a9ff9e4875d0ef361e240/nebedek.pdfIn PDF document text
    • http://vivaibonomo.it/userfiles/files/5518013269.pdfIn PDF document text
    • https://rn62ug59c-to8.com/contents/files/wivipogunuxidit.pdfIn PDF document text
    • https://pharma-tools.pl/galeria/file/248723466.pdfIn PDF document text
    • https://4wheelchile.cl/admin/uploads/file/14922896412.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145615824c52---tegoxifu.pdfIn PDF document text
    • https://tw-itemaos.com/ckfinder/userfiles/files/41285897798.pdfIn PDF document text
    • https://groupunsur2.com/contents/files/zowewilevulakeva.pdfIn PDF document text
    • https://108pizza.pl/uploads/userfiles/files/60669901472.pdfIn PDF document text
    • http://cbafjvn.com/uploads/userfiles/file/bojupewovud.pdfIn PDF document text
    • http://natpuedu.in/userfiles/file/tamaxu.pdfIn PDF document text
    • http://mail.teleserviciomalaga.com/ckfinder/userfiles/files/sobuwulokofoluloxikigiwug.pdfIn PDF document text
    • http://naszemotyle.natura2000.pl/imgturysta/files/80784231764.pdfIn PDF document text
    • https://aayams.com/userfiles/file/53921280940.pdfIn PDF document text
    • http://klusjesindex.nl/images/uploads/79131328119.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d5c194a725---64951054409.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613f4993df8c1---kiteseramukosupudadibik.pdfIn PDF document text
    • http://residencelesaline.it/userfiles/files/18508356637.pdfIn PDF document text
    • https://gegeny.hu/uploads/file/79427593757.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=simcity+cheats+apkPDF link annotation

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