Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c88e1c8e7da7da6…

MALICIOUS

PDF

58.6 KB Created: 2021-09-11 09:23:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: cf41aae7eb3f3f5ae436321aad00bec7 SHA-1: 83c4df02d1d1a73621b77fcc4ff8d8de07f62cab SHA-256: 4c88e1c8e7da7da6ab61c85a943b69cd69770326a8c6eadf93355af640014741
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected by ClamAV as Pdf.Phishing.Trojan. The PDF contains numerous embedded links, many pointing to unknown or potentially malicious domains, suggesting a link farm designed to lead users to phishing sites or other malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this by identifying the PDF as a link farm on disposable hosting.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3715

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 https://protectname.xyz/whoisprivacy/userfiles/files/85895004615.pdf In PDF document text
    • http://silverk.ru/img/lib/file/80866704941.pdfIn PDF document text
    • https://thic.net/plugin/ce1/ckfinder/userfiles/files/44493050415.pdfIn PDF document text
    • https://futurefacesnyc.com/uploads/file/jagepowitasafemap.pdfIn PDF document text
    • http://traktorpulling.de/ablage/userfiles/files/wupipawijod.pdfIn PDF document text
    • https://schmitz.cz/res/file/jupuzapeba.pdfIn PDF document text
    • http://scarpatti.com/files/41162437736.pdfIn PDF document text
    • https://hearing-outlet.com/uploads/files/202109051808571735.pdfIn PDF document text
    • http://fskyok.com/uploadfile/files/xonosanuvov.pdfIn PDF document text
    • http://paulgraphics.paulsfashion.in/files/12066464168.pdfIn PDF document text
    • http://life-homeshop.com/asset/uploads/files/babemedafulofuw.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/sekozagaxafezukaxuwowato.pdfIn PDF document text
    • http://foto-preiss.at/upload_files/files/63638147774.pdfIn PDF document text
    • http://muabannhagiare.net/images/uploads/files/lixifurowoteba.pdfIn PDF document text
    • http://mkbeauty.vn/luutru/files/papojuvafurujewoma.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff5142e3f7---88091484512.pdfIn PDF document text
    • http://proleague.dk/userfiles/file/92646816673.pdfIn PDF document text
    • https://autopsrus.aerovents.com/ckfinder/userfiles/files/57939696029.pdfIn PDF document text
    • http://fuguchair.com/upfolder/e/files/20210902064633.pdfIn PDF document text
    • http://xn--hh0b97d8is16e.com/userData/board/file/20924439420.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1613030b47053d---66119711078.pdfIn PDF document text
    • http://huyndaicaudien.com/upload/files/76075804205.pdfIn PDF document text
    • http://ueros.fr/admin/ckfinder/userfiles/files/sesosimonipuxalufefo.pdfIn PDF document text
    • http://evrokomplekt.ru/userfiles/file/mibijevonu.pdfIn PDF document text
    • http://www.groupementpecheduloir.com/ckfinder/userfiles/files/28638267414.pdfIn PDF document text
    • http://spy-military-labs.com/userfiles/file/97618678467.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=a+broad+definition+of+the+curriculumPDF link annotation

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