Malicious PDF — malware analysis report

Static analysis result for SHA-256 93a76f4b8f5f4b5f…

MALICIOUS

PDF

44.6 KB Created: 2021-09-08 10:47:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 20e57a569fa204cf1e41068bb990ded8 SHA-1: 08518e90b166b26843a68846c60cf8757d20c042 SHA-256: 93a76f4b8f5f4b5fb72007486316581b7de7090fcddd82e191a78016cbf4d97f
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It functions as a link farm, containing numerous embedded URLs that point to other PDF files hosted on compromised websites. The presence of multiple links on disposable or compromised hosting suggests an attempt to distribute malicious content or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8875

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 http://mdbim.pl/ubezpiecz/obrazy/file/gejitilu.pdf In PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b15630bc6---jefalakoxirenusifoxu.pdfIn PDF document text
    • https://solelane.com/ckfinder/userfiles/files/5493065604.pdfIn PDF document text
    • http://faradbox.pl/files/file/lumeresewedixup.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/55581779248.pdfIn PDF document text
    • https://stopserv.ru/files/file/52049905954.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/aie836u6q0p1a7b6i021m4k3op/nisujofefet.pdfIn PDF document text
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/eed5a301e595af48272adbf7e6009df4/46891229173.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160abb51092dee---jedaved.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/3bf5e2688f1ff4da357885fcfe722279/42967737512.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/raborufitoniwaxujununud.pdfIn PDF document text
    • https://biocenfis.es/uploads/assets/file/89956445286.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/45706234731.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/b39e534b179f7a816bcea6488cae551e/xedaxeliviwudobobiwide.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/f067e885619f019fef14709550d534ef/tudatuzabufusevodakag.pdfIn PDF document text
    • https://jdlpartnerss.com/userfiles/file/binupivisuzusi.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160972a422cdcc---41913206129.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cdecdc4e8e3cee14ca8ab759e6014a3d/wurumusalinakaxof.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/1tvafjpdaari7kkpf1d4lgkd7p/52187840969.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609831e47fc1d---kojajojoxesezexe.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612819ced0d4f---92121067075.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=qaseeda+ghousia+pdf+downloadPDF link annotation

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