Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4dd19d5beb8a128…

MALICIOUS

PDF

97.1 KB Created: 2021-09-03 15:35:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-07
MD5: c561f64d9826d381b832cde9dc8390e0 SHA-1: 947d7fe8d133077e133e08c9eee2c278a89c28a3 SHA-256: d4dd19d5beb8a12849ad5d5377550194cd27a42b83c4889a7f9d41bc25945288
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. While no scripts were explicitly extracted, the nature of the URLs and the heuristic firings indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4567

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
  • 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.
  • 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://lscapital.it/images/file/93565564389.pdf In PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160780c52a57e4---mivetepuvonuguriketekoro.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16094376e277b5---xubupesuselav.pdfIn PDF document text
    • http://perfekt-dom.pl/designhome/admin/userfiles/file/rilunadomix.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c07262b82c4---mazevubuzi.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/bilukomadiluzij.pdfIn PDF document text
    • http://www.darvidproperty.com/news/file/kuxiwifiwoxusoba.pdfIn PDF document text
    • http://fzcce.com/aimgs/uload/files/tazutajomat.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/ce9f93c3f0fc28aef2c4aa2e846b963d/mizewezanabezonedul.pdfIn PDF document text
    • http://cpgny.com/userfiles/files/93658460243.pdfIn PDF document text
    • http://autobedrijvenindex.nl/images/uploads/4144397060.pdfIn PDF document text
    • http://kramor.bg/userfiles/file/gujuzamalilugol.pdfIn PDF document text
    • http://ruegen-ferienhaus-schneider.de/userfiles/file/58430943772.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091ba3e59d83---kitifukejixagif.pdfIn PDF document text
    • http://weingut-suppan.at/files/xixupakupi.pdfIn PDF document text
    • http://compsult.net/userfiles/file/ratigigetozefegunejaged.pdfIn PDF document text
    • http://piotrkowska77.pl/zdjeciafile/80503277753.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/8033291637.pdfIn PDF document text
    • http://kengosushionlineorder.com/uploads/files/44040737615.pdfIn PDF document text
    • http://asbufestival.com/uploads/FCK_files/file/32420028493.pdfIn PDF document text
    • http://globalroomplus.com/bot/ckfinder/uf/files/10888138732.pdfIn PDF document text
    • https://sportnazona.bg/f/uploads/files/62320861774.pdfIn PDF document text
    • http://balogmihaly.hu/UserFiles/file/nukafelun.pdfIn PDF document text
    • https://cafesca.com/ckfinder/userfiles/files/babazaridamo.pdfIn PDF document text
    • http://mtsp.by/userfiles/files/56379898622.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/4f665e88c0d117ade1dcd48165532175/tolutixagak.pdfIn PDF document text
    • http://thompsonhigh1980.com/clients/4/48/48b9e10b24f1ac3c627dfd5bb8c45987/File/fuzidaxekodetijolipemibud.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=acquisition+and+disposition+of+property+plant+and+equipment+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001486f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1486F 18128 bytes
SHA-256: 8cfd9dc7b849d3f742dfc859ea400fd2626fa46ef23a483f1c7e8aa54bbc25bd

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