Malicious PDF — malware analysis report

Static analysis result for SHA-256 914125c8942056e4…

MALICIOUS

PDF

59.5 KB Created: 2021-07-29 17:21:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 7fa0e30176f3e3b1a179afe29d9825a7 SHA-1: 43ebef9000886a915fca8d067caf88717470a6bd SHA-256: 914125c8942056e4c225f8601759b74f384f63ba0c06cde4706adbdb368262f0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised or disposable domains, a common tactic for phishing or distributing malware. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and link farm suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7578

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://ash-graphy.com/userfiles/file/tavasemedanekaruzi.pdf In PDF document text
    • https://alsterparkett.de/wp-content/plugins/super-forms/uploads/php/files/8u70i7hno70bsef4cfejujn8r8/zegar.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bfbbce3a544---83178374034.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c86ff6a1654---tapujufi.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/f75a028f023e35c48f4529519b470cfc/25236033017.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021062621053446.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/mirulagujirujaje.pdfIn PDF document text
    • http://madiran-cruduparadis.fr/ckfinder/userfiles/files/sepirodegibutemalopopob.pdfIn PDF document text
    • http://thegioituigiay.net/uploads/files/lukerevawinelawevogaridek.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092793e77a04---wazedopilovazomuwabov.pdfIn PDF document text
    • https://vate-tire.ru/wp-content/plugins/super-forms/uploads/php/files/ae29697ae5226609037a138969998bde/kugiwile.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0034180e80---57763580395.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/8ed91556fbec9685ff659be065507832/68526959508.pdfIn PDF document text
    • http://vertracapital.com/uploads/files/wirivemiwukibovazin.pdfIn PDF document text
    • https://www.dogandemir.av.tr/paketler/ckfinder/dosyalar/files/lonelewosowirajofulixuzif.pdfIn PDF document text
    • http://angelescare.com/userfiles/file/55749029188.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/792959535bebf5f0687da77f67541ce1/4604803513.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1606d88088fd0d---kuzemalopebetop.pdfIn PDF document text
    • http://alliance-ic.ru/uploads/file/19663526750.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+put+on+dr+jart+maskPDF link annotation

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