Malicious PDF — malware analysis report

Static analysis result for SHA-256 092f5a3d21182884…

MALICIOUS

PDF

97.0 KB Created: 2021-09-05 19:00:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: ac1be5079d64b44bbf31f0008546501b SHA-1: 626cc605f87abfe5ab8adea2d080873a9c763f45 SHA-256: 092f5a3d21182884793fd4d5fcc91975bdcb9ae12b1cfeb37e9c439baea7759f
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and a large number of external URIs, many of which point to compromised WordPress sites. The ClamAV detection and ML classifier indicate malicious intent, likely to host or redirect to further malicious content. The embedded JavaScript is likely responsible for initiating the download or redirection process.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5678

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d5a9c2747f1---nebuzijilobe.pdf In PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160e2beb7375e8---vonezepisogerixinib.pdfIn PDF document text
    • http://gunjanjain.com/app/webroot/js/uploads/files/93496865261.pdfIn PDF document text
    • http://kibbkw.com/uploads/file/64360120554.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608484adb7109---43707527507.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/8068cc55f722bee45cc41fb4b6f4badd/jawiwezixitet.pdfIn PDF document text
    • http://ledins.lv/cms/file/34082347979.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c5ee13bda---93441029820.pdfIn PDF document text
    • https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/6c59d79b7806533a3853cdb280339e02/15079086885.pdfIn PDF document text
    • http://mavelikaradiocese.org/rapha/ckfinder/userfiles/files/kutetelajapedasopafu.pdfIn PDF document text
    • http://studioscoponi.eu/userfiles/files/menaru.pdfIn PDF document text
    • http://soflocops.net/clients/81266/File/pokozidebulexazisogewavo.pdfIn PDF document text
    • https://bishopsalamatkhokhar.org/userfiles/file/japokuvilavo.pdfIn PDF document text
    • https://nistd.in/userfiles/file/17574207687.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/29443676718.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ae1e30aac7a---7649238002.pdfIn PDF document text
    • http://mspchicagolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/26775574040.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd3b762493---685575684.pdfIn PDF document text
    • http://isystemlab.com/admin/ckfinder/userfiles/files/68932675061.pdfIn PDF document text
    • https://rajakeempat.com/contents/files/85183228158.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/ch8o775c2g2j7cmg7fh706c5n6/widugipipabi.pdfIn PDF document text
    • https://calendarsunrooms.com/userfiles/files/toluvutepibebilizaroxev.pdfIn PDF document text
    • https://ms2gacor.com/contents/files/37493460672.pdfIn PDF document text
    • http://clairvoyantinfotech.com/demo/images/88997501078.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e8df14ed7---kugofe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=vibration+analysis+solidworks+pdfPDF link annotation

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