Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fa45ecea2d6474b…

MALICIOUS

PDF

48.0 KB Created: 2021-09-28 08:00:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: d4a365729c5db76202a895e45ed37102 SHA-1: 90adc73b1b3198907a4346288e96512b8e9da5a1 SHA-256: 5fa45ecea2d6474be9ee29d6fddba34be289628b6be1fd179965dbec37b1ed2a
124 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious content. It functions as a link farm, presenting numerous links to external PDF files, many hosted on distinct domains, suggesting an attempt to distribute malicious content or conduct phishing. The presence of external URIs and the link farm characteristic strongly point towards a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6935

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://alarm.pl/userfiles/file/setivodajavaja.pdf In PDF document text
    • http://hzkontejnery.cz/ckfinder/userfiles/files/zafipoxelotesupu.pdfIn PDF document text
    • https://journeywithmypet.com/ckfinder/userfiles/files/pesewavisi.pdfIn PDF document text
    • http://tabletopad.com/images/file/jisifesaderobagikitulewa.pdfIn PDF document text
    • https://dagvandearchitectuur.be/_files/file/72605624195.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ad8fda9898---varegogijuxonebuke.pdfIn PDF document text
    • http://hidrometa.com/images_upload/files/tazedowufij.pdfIn PDF document text
    • http://vejwun.cz/images/donovedowitizijebu.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614dbbc1e6b24---dirak.pdfIn PDF document text
    • https://idd.no/ckfinder/userfiles/files/rodegatowinekederegolibi.pdfIn PDF document text
    • http://gibisch.biz/files/files/bagitozukozizatu.pdfIn PDF document text
    • http://finproekt-msk.ru/userfiles/file/87140826747.pdfIn PDF document text
    • http://joyandwowbook.com/upload/file/zuraxowodip.pdfIn PDF document text
    • https://babamansurkurhuseyin.com/uni/yuklemeler/file/gogofamelaw.pdfIn PDF document text
    • https://silky.ae/images/bulk_images/files/nilagobevotim.pdfIn PDF document text
    • https://vaynhanh365.net/contents/files/56673564369.pdfIn PDF document text
    • http://bachtungcompany.com/upload/files/60466393278.pdfIn PDF document text
    • http://tomasmrazek.cz/userfiles/file/33278472558.pdfIn PDF document text
    • https://b2bircruise.travflex.com/bot/ckfinder/uf/files/xenipulixenapewuwijo.pdfIn PDF document text
    • http://iproperty.ae/userfiles/file/foxiloliki.pdfIn PDF document text
    • http://att-na.com/upload/wuzupawif.pdfIn PDF document text
    • http://imbirimbir.ru/files/49174122519.pdfIn PDF document text
    • https://equipelec.fr/ckfinder/userfiles/files/60484300971.pdfIn PDF document text
    • http://scuolascifondocortinadolomiti.it/userfiles/files/pavumiz.pdfIn PDF document text
    • http://hoangminhceramics.com/app/webroot/uploads/files/26471157684.pdfIn PDF document text
    • https://radekslodkiewicz.pl/files/file/26427310660.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=tipos+de+craneo+pdfPDF link annotation

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