Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d3a33ae44bbca12…

MALICIOUS

PDF

103.5 KB Created: 2021-09-07 11:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 820751ee16bc2329977f4852b4b261ce SHA-1: b114e9d3ab7d5a475bb42c0fef65a56a2107e1ca SHA-256: 5d3a33ae44bbca12b47261488a017bdf02a9e8a482a645a6ead781d88cab70e3
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites. Heuristics indicate this is a link farm designed to direct users to potentially malicious content. ClamAV detection as Pdf.Phishing.Trojan further supports a malicious classification. The primary attack pattern involves luring users through these links, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6503

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/03p1jfdok0oeps2h2r7clavhdq/medutagufat.pdf In PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083fa5121ab5---kuxefiketowajukoper.pdfIn PDF document text
    • https://speeddating.lt/speeddating/ckfinder/userfiles/files/pugonusuxelas.pdfIn PDF document text
    • http://asztalosweb.hu/userfiles/file/3150716687.pdfIn PDF document text
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160948ef1bc96e---25359547639.pdfIn PDF document text
    • http://newtarrytowndeli.com/uploads/files/mapejoxodoxiwudorilefika.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e199ea71a4a---83285659605.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b7e452ad37---49223752805.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160838af50b87e---pavobewedovovure.pdfIn PDF document text
    • http://security-m.jp/tool/images/file/vesenonotuluvakone.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16091f559beb7d---sapifavuvodu.pdfIn PDF document text
    • http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/wufewonasuxifanidol.pdfIn PDF document text
    • http://hp-cnc.de/uploads/files/91453984612.pdfIn PDF document text
    • https://ms01bet.net/contents//files/wetaso.pdfIn PDF document text
    • http://klasykarozrywki.pl/public/images/fck/file/vetuma.pdfIn PDF document text
    • https://emauto.lv/index/images/up/file/tikefimabebewejekuz.pdfIn PDF document text
    • https://juvelyrikoscentras.lt/Files/file/96720025708.pdfIn PDF document text
    • https://jokerprod.net/userfiles/file/45809876317.pdfIn PDF document text
    • http://artecgroupservices.com/imagenes/file/jipanisekowusapibifivot.pdfIn PDF document text
    • http://nhhs78.org/clients/63854/File/rojaraxineti.pdfIn PDF document text
    • http://an-ocn.ru/ckfinder/userfiles/files/dekofexinoludikizikoneva.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b349d71b261---vinozetisixogabi.pdfIn PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/2d23a04427eff0c11bcdb3adc7a20298/wiwanurefatijirusofuf.pdfIn PDF document text
    • https://123kozijnofferteIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=lisbon+treaty+2007+pdfPDF link annotation

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