Malicious PDF — malware analysis report

Static analysis result for SHA-256 c78574c0edafcd77…

MALICIOUS

PDF

54.6 KB Created: 2021-09-15 15:37:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6db428714e3930e53d3998953b17a6ca SHA-1: 01b6deb8d0a0f0de743e32ac2ef3504bc61d29aa SHA-256: c78574c0edafcd77f28866cfeeca7461b735150f5fabb6ac766b9269b02f280e
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external URIs, many of which point to disposable domains. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a link farm designed to obscure the true destination. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6099

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
  • 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://synowka.pl/galeria/file/2236097509.pdf In PDF document text
    • http://vibestedu.com/_UploadFile/Images/file/53681825906.pdfIn PDF document text
    • http://swaptoys.org/ckeditor/uploads/files/roxibeniwoge.pdfIn PDF document text
    • http://alptw.com/images/files/21578267413.pdfIn PDF document text
    • http://bm-shower.com/userfiles/files/feveginakavezo.pdfIn PDF document text
    • http://dorrstrechy.cz/UserFiles/File/41550482208.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612edfdc61255---nupedolovipugatodirifo.pdfIn PDF document text
    • http://kramor.bg/userfiles/file/51275844035.pdfIn PDF document text
    • https://volpatoebrum.com.br/_common/admin/scripts/ckfinder/userfiles/files/20038489734.pdfIn PDF document text
    • https://bisleriwheel.genefied.co/ckfinder/userfiles/files/lofagedowajodazapoxavuwod.pdfIn PDF document text
    • http://urgentcarepb.net/userfiles/file/dukaradefikasuxa.pdfIn PDF document text
    • http://webcertain.asia/contentupload/fckeditorUploads/organization_/file/kunisalegimagelogazebojur.pdfIn PDF document text
    • http://studionegrelli.it/userfiles/files/12996344189.pdfIn PDF document text
    • http://bbmeti.it/userfiles/files/60142463013.pdfIn PDF document text
    • http://xn--jt2b56wn0ap2a.com/upload/file/202109072033506843.pdfIn PDF document text
    • http://masan315.net/board/imagefile/file/nezebanufimabufusa.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/5409c962374e46334bcb8d8a23e79218/54066454810.pdfIn PDF document text
    • http://9jamail.com/FCKeditor/editor/filemanager/connectors/userfiles/file/fakawoxato.pdfIn PDF document text
    • https://charterfori.ir/basefile/charterforiir/files/wibajizixexonogevadesito.pdfIn PDF document text
    • http://pscemetery.com/userfiles/file/78549445285.pdfIn PDF document text
    • http://magooferta.pl/uploads/fck/file/lukosujaxigogalejawa.pdfIn PDF document text
    • http://carnow.jp/js/upload/files/31200414402.pdfIn PDF document text
    • http://kleinschaden-expert.de/userfiles/file/639006218.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+convert+webpage+to+pdfPDF link annotation

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