Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d6251f6f6ebdf6a…

MALICIOUS

PDF

50.9 KB Created: 2021-09-04 15:04:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 34dd573f01509d69910b741c010fd6e6 SHA-1: f70b12ad147aaabca3162f9d933f7dbe6a86ba62 SHA-256: 2d6251f6f6ebdf6a596e27447992e99c7c61676a1c6a9d681b121f3024f02f55
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple links pointing to potentially compromised websites, suggesting an attempt to redirect users to malicious content. The heuristic firings indicate a link farm strategy, with several URLs hosted on what appear to be compromised WordPress installations. The embedded JavaScript likely facilitates the redirection or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8963

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://hb-hospital.com/file_upload/fck_upfile/file/jixapu.pdf In PDF document text
    • https://aldurra.ly/images-editeur/img/file/senaxuvitixavujit.pdfIn PDF document text
    • http://belovosushi.ru/files/49017292158.pdfIn PDF document text
    • https://blokhol.com/upload/files/pajunenopuxux.pdfIn PDF document text
    • http://americanpetrochemicals.com/customers/CMS-IMAGES/file/lilakanenex.pdfIn PDF document text
    • http://gazosilikatnn.ru/uploads/files/46224621251.pdfIn PDF document text
    • http://agriturismocorteerbatici.it/userfiles/files/41042247714.pdfIn PDF document text
    • http://baugeraeteverleih.de/benutzerdateien/vumobifopew.pdfIn PDF document text
    • https://xlspandoek.nl/userfiles/file/67234952002.pdfIn PDF document text
    • http://peach2560.xyz/js/ckfinder/userfiles/files/9073856511.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/6e5bdb3b9746ca43b10b42f65acd17c4/40286220304.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ae8a92cee31---sexidexozewuta.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16107b7eda60f4---72304670675.pdfIn PDF document text
    • http://titibbs.xyz/js/ckfinder/userfiles/files/jokulibopufurazuxalog.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d3c6bde1228---99802739765.pdfIn PDF document text
    • https://crownprolaw.com/userfiles/Proj_Name//files/51247189857.pdfIn PDF document text
    • http://dbjhockeytournament.com/clients/f/f9/f9ff496842c877cbb4522510b668f2a2/File/44819278692.pdfIn PDF document text
    • http://nuraski.pl/wsg/userfiles/lefugawadiwakovatuwuzaza.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/0utcn25742k55bv380n2abdp0g/74099900891.pdfIn PDF document text
    • http://dzwigipoznan.pl/userfiles/file/fevozozisodinajuleniso.pdfIn PDF document text
    • http://circolosilverblufitnessclub.eu/userfiles/files/76226021968.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/k1581f9cmghbt3u8bv7un3v3n4/gumizometuvovepewaje.pdfIn PDF document text
    • http://trendymamy.pl/userfiles/file/wuzuwuzorupav.pdfIn PDF document text
    • http://cpk.by/ckfinder/userfiles/files/55010615535.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=como+hacer+con+botellas+de+plastico+manualidadesPDF link annotation

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