Malicious PDF — malware analysis report

Static analysis result for SHA-256 058035cdc99decf1…

MALICIOUS

PDF

63.7 KB Created: 2021-09-14 11:15:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 276791c8023d1efa81ba44675b81555a SHA-1: 3ee2f02238f416df62849c988aad27ab869a6aab SHA-256: 058035cdc99decf136dad3125afc0bc770193b0a6864465c787a6bc73dca133e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated maliciousness. It contains numerous embedded URLs, with one specifically identified as a link farm on disposable hosting, suggesting an attempt to obscure the final malicious destination. The presence of PDF_URI and EMBEDDED_URL heuristics further supports the malicious intent of directing users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5089

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://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1612eecd108e78---kufalufaxuvixubonomifim.pdf In PDF document text
    • http://www.sm.ac.th/ckfinder/userfiles/files/bunarolufebemejafatowit.pdfIn PDF document text
    • http://doradcyprawni.com/images/pliki/28235725358.pdfIn PDF document text
    • http://www.centralperdana.com/file/jigafiwawoxifitomasolalom.pdfIn PDF document text
    • https://vas-vill.hu/userfiles/file/83345877071.pdfIn PDF document text
    • http://gioiacompany.net/images/upload/file/65661466136.pdfIn PDF document text
    • http://sungder.com/upload/72988690978.pdfIn PDF document text
    • http://www.drivingschool-brno.cz/files/files/dixisojunug.pdfIn PDF document text
    • https://gancza-yacht.pl/userfiles/file/vekumori.pdfIn PDF document text
    • http://www.impactit.in/ckfinder/userfiles/files/liwabegopub.pdfIn PDF document text
    • http://sbstroy53.ru/img/files/8835190092.pdfIn PDF document text
    • http://szermgrt.hu/uploads/ckfinder/userfiles/files/72609043969.pdfIn PDF document text
    • https://doluhosting.com/calisma2/files/uploads/97516539431.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/mabibazadasoxumilisafimi.pdfIn PDF document text
    • http://shrlie.com/upload_fck/file/2021-9-10/20210910221141661453.pdfIn PDF document text
    • http://mathrainbow.com/userfiles/file/vogales.pdfIn PDF document text
    • http://namkhoabacninh.com/images/files/29349817324.pdfIn PDF document text
    • http://jpind.pl/userfiles/file/selapotiseb.pdfIn PDF document text
    • https://huaku3c.tw/uploads/files/202109022129276579.pdfIn PDF document text
    • http://youngdongtec.com/userfiles/file/kobilujekilapigatunevuro.pdfIn PDF document text
    • http://daejonggyoyc.com/userfiles/file/20210904220035.pdfIn PDF document text
    • http://herbwaterthailand.com/userfiles/files/towegojonineli.pdfIn PDF document text
    • https://xn--interpeas-r6a.es/upload/files/jinokipor.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=filmyzilla+hollywood+moviePDF link annotation