Malicious PDF — malware analysis report

Static analysis result for SHA-256 101afa79cd57bc5d…

MALICIOUS

PDF

42.7 KB Created: 2021-10-01 12:50:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 8b6892931f766d191fd48d2df659fe97 SHA-1: c372c35d187fb9068f54091fda6df8859aa23886 SHA-256: 101afa79cd57bc5d218af0c3bc9cf2db537ee0dd11c9343b3f8a52b4de8015b0
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of embedded JavaScript suggests an attempt to execute malicious code within the PDF viewer.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7297

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
  • 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://seasonsblinds.com/uploads/ckfinder/userfiles/files/tisimanigobu.pdf In PDF document text
    • http://bafiti.com/sklep/userfiles/file/sexemigaminamov.pdfIn PDF document text
    • http://jr-bang.com/uploadfiles/20210911114724.pdfIn PDF document text
    • http://jjsgreatescape.com/uploaded_files/userfiles/files/87056106722.pdfIn PDF document text
    • http://www.leads-bd.org/app/webroot/js/ckfinder/userfiles/files/19525128645.pdfIn PDF document text
    • http://www.solarwindependence.com/ckfinder/userfiles/files/maweluvanavod.pdfIn PDF document text
    • https://kuwaitpolyurethane.com/ckfinder/userfiles/files/33757138308.pdfIn PDF document text
    • http://autoscuolapezzano.it/userfiles/files/nizekoxamuki.pdfIn PDF document text
    • https://jackyrouxmethode.com/userfiles/file/29352741752.pdfIn PDF document text
    • http://vividconcept.in/userfiles/file/luwajenalatifal.pdfIn PDF document text
    • http://spadhotel.com/basefile/spadhotelcom/files/bukimejunejowesesulesuwij.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137fe6b6061e---teturejepezifojerewodanap.pdfIn PDF document text
    • http://sweatrinserepeat.com/ckfinder/userfiles/files/ruvuluzeximidemo.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/161464ae361b3b---jugagulonawiwama.pdfIn PDF document text
    • https://ksi-system.pl/editorfiles/file/47567722258.pdfIn PDF document text
    • http://maekalocal.com/Maeka/UserFiles/File/fabigobezejuzas.pdfIn PDF document text
    • https://atpl.aero/ckfinder/userfiles/files/36944866338.pdfIn PDF document text
    • http://thefencedocumentary.ca/adminfiles/file/ludek.pdfIn PDF document text
    • http://murito.fr/ckfinder/userfiles/files/momamotevulegosezi.pdfIn PDF document text
    • https://natatourism.com/userfiles/files/91639105429.pdfIn PDF document text
    • http://votejoedestefano.com/editorData/file/15781522700.pdfIn PDF document text
    • https://cam-ceeds.org/ckfinder/userfiles/files/60579132838.pdfIn PDF document text
    • https://bevillelecomte.com/ckfinder/userfiles/files/jupobanefigosafotagewi.pdfIn PDF document text
    • http://vimar.ua/userfiles/files/tosewiva.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=download+gta+5+apk+for+freePDF link annotation

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