Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a742015a9f10c15…

MALICIOUS

PDF

57.3 KB Created: 2021-07-18 20:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: dda3dea1de30d99aab0eebaaee59518f SHA-1: 7d71d9343e7d541bd4ed84ae1254fb889b81e7c6 SHA-256: 1a742015a9f10c155e972146514cfff156c92f1b08998b05dd5bbf9485662966
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many hosted on compromised CMS upload directories or disposable domains, suggesting a link farm or phishing lure. The PDF structure and embedded content indicate it's likely intended to redirect users to malicious sites, potentially for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5388

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://remaining-mc.de/userfiles/file/dofarevevumokatobuvog.pdf In PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609473860a988---93238481666.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/c3bba3502dd66d54f628ad256cfb4091/nazore.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/tdr50a54ti7tvvj12uvksnn1hh/80108317621.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/6fd37fdeac268a7f2102d164dedb35f8/fusegujawosumuzaxaludi.pdfIn PDF document text
    • https://nolimitscenter.be/peausitive/images/FCKeditor/file/jewubukelepupuwimavalov.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/d78d168088b87793b078ad09276e7b83/67799557148.pdfIn PDF document text
    • https://heider.ru/wp-content/plugins/super-forms/uploads/php/files/e648c022e92d33d5d0608ac5005c67bd/fegenimoderegiwefonex.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/c3b790ae02519f6a5e9997b0cbb385b6/newiligi.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160701c970ff57---kamogudumiba.pdfIn PDF document text
    • http://verynailscm.com/user_img/file/10277267702.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a12240a0163---49617001474.pdfIn PDF document text
    • https://2ruoteexpo.it/ckfinder/userfiles/files/32068598966.pdfIn PDF document text
    • http://agavietnam.com/img/files/92112550985.pdfIn PDF document text
    • http://ebslang.net/_UploadFile/Images/file/wigulozaninedegesive.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/21417068445.pdfIn PDF document text
    • http://allprintusa.com/admin/images/file/zepinasonuxovakiwitaxu.pdfIn PDF document text
    • http://goldnumber.info/userfiles/file/noxukirulesarupuzuba.pdfIn PDF document text
    • https://louvre.lv/res/wysiwyg/file/wozefubu.pdfIn PDF document text
    • http://year-c.com/upload_fck/file/2021-6-2/20210602170937730763.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/6s219370ini8dclhaccppepa67/vitafeximosuzexovujolexek.pdfIn PDF document text
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/622ed654c2b24f6cdee8ad82c9099780/80093015980.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/qakerhok2qd436u09mu0kfbug7/sezazutaseparavuvo.pdfIn PDF document text
    • https://artenika.pl/fck/file/57491421762.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/121dedaf248ecd178af4f533a76b4612/duguzoneduvedugamuweje.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=velocity+of+light+in+spacePDF link annotation

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