Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b05e5c528a9cd59…

MALICIOUS

PDF

48.4 KB Created: 2021-07-16 08:23:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: b0ecce23e8d06966760de2f3a78ade99 SHA-1: 2d4a27a54a83a47e120a2d320553710e22690a67 SHA-256: 5b05e5c528a9cd59472bc360d15093c280d33090703c7c952c5af609314e7a63
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to lure users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a phishing or downloader campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9210

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 http://vidol.nl/userfiles/file/79710788.pdf In PDF document text
    • http://sylvianapoles.com/clients/e/e6/e63d90d46a840f0b3195f531cec11f6e/File/nidupu.pdfIn PDF document text
    • http://josephpowellfamilyreunion.com/clients/0/04/04c15d356d3082020e114f8c0300f46e/File/78689365028.pdfIn PDF document text
    • http://luisacortesearchitetto.it/userfiles/files/25990342644.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad11c94bae---pupakipebejeseniki.pdfIn PDF document text
    • https://davaocarrental.com/images/file/niwimojugalonuw.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc6cf85b5e---wazajesigiwosufalar.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/8a36c1151279edc403e1964011bd5ead/4036660310.pdfIn PDF document text
    • http://pinetreerealty.ca/clients/55933/File/57924041379.pdfIn PDF document text
    • https://nolimitscenter.be/peausitive/images/FCKeditor/file/65007854392.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bbb05f08dac---54835368805.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a3b8c159c1---69192269544.pdfIn PDF document text
    • https://lamaisonducoeur.ca/upload/editor/file/pofopikijozisutujovevewaf.pdfIn PDF document text
    • http://eperon-kochersberg.com/img_db/20820077980.pdfIn PDF document text
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e12f0bec3b1---jaloxigukixogofixijotikab.pdfIn PDF document text
    • http://www.barbazan-debat.fr/ckfinder/userfiles/files/visevepitoruzike.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c0719ce947b---memaronona.pdfIn PDF document text
    • https://lawyerupsmart.com/tempimg/file/55942387712.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/413ad9a224829c397ef80d8d0942ad16/wugivekegi.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1607c91f75b526---dusamofikezixutu.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16072260408655---tenarupibokaman.pdfIn PDF document text
    • http://xiaohecollege.com/d/files/vodatutekebosamataf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=trolls+world+tour+full+movie+free+download+mp4PDF link annotation

Related samples 8

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