Malicious PDF — malware analysis report

Static analysis result for SHA-256 48085ef4212b18cc…

MALICIOUS

PDF

45.6 KB Created: 2021-09-06 06:54:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 2729268a7e451ca5999d62b49013e7f5 SHA-1: 4d0ed2c8911ec74045b4f6c19ea5fa6a50e9777e SHA-256: 48085ef4212b18cc1955d90977dda1d7b9c133c5f2a16b628916b13d7411bfca
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload storage and other disposable hosting sites. The primary purpose appears to be directing users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7355

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://oniceh.ru/uplcv?utm_term=hereditary+disorders+pdf PDF link annotation
    • http://goreskyreunion.com/clients/b/ba/ba087d28c24afe6c5bc45fa062332e47/File/xexalebixusujunukamu.pdfIn PDF document text
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093316f6e72b---80690151979.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/ae4d61a8a076e41f6c59a7441532d7cc/39279002163.pdfIn PDF document text
    • https://alianzatours.com/imagenes/file/35498419431.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/1sbjr7p2ros1oh9h0nbun812r4/dekaz.pdfIn PDF document text
    • http://tfforming.ru/d/files/40445147845.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/731f88308a15ac691d625edc03a6a4bf/77047897751.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3cf9007e9b---69139902112.pdfIn PDF document text
    • http://centrumbiznesurawicz.pl/userfiles/file/lerijur.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/6c13a9cdad160d0cadf1332e91c6fdbb/90153483667.pdfIn PDF document text
    • http://kaztelcom.kz/ckfinder/userfiles/files/moguguv.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9ca2dfb5a---78021207302.pdfIn PDF document text
    • http://www.chp.pl/ckfinder/userfiles/files/turuki.pdfIn PDF document text
    • https://techielingo.com/fck_uploads/files/45639212720.pdfIn PDF document text
    • https://boucherienabli.com/uploads/FCK_files/file/bajorijijago.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b60dc93bb3e---5930447163.pdfIn PDF document text
    • http://bangkoksolarpower.com/syner_upload/images/files/41518318185.pdfIn PDF document text
    • http://vivaibonomo.it/userfiles/files/jenitikugokiwinade.pdfIn PDF document text
    • https://cordovajewelry.com/images/file/mutanuxenitujuso.pdfIn PDF document text
    • http://simsvizag.com/admin/uploadedfiles/file///46714235000.pdfIn PDF document text
    • http://nhakhoauytinhaiphong.com/upload/files/32641990615.pdfIn PDF document text
    • http://daisytalavera.com/userfiles/files/jitilopawuladiw.pdfIn PDF document text
    • https://samtee.com/admin/images/file/69865998321.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611e615b66412---luwiriwuzabijutugitozapin.pdfIn PDF document text

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