Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a8df2f2fe5fa5e9…

MALICIOUS

PDF

50.5 KB Created: 2021-09-06 06:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 0dbc850ae9ae72312b3a5833ff805039 SHA-1: 919a4fce553dbd9dcc0e5ca4bd99d9a11e6f3ad8 SHA-256: 2a8df2f2fe5fa5e9b989a5c0d43767aeff86e4c29cb5264d7102e77eeb103c67
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains a link farm pointing to multiple compromised websites, likely intended to trick users into downloading further malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or trojan delivery purpose. No scripts were extracted, but the PDF structure and embedded links are indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4974

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://wixoon.hu/upload/file/94477062869.pdf In PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/kglhprmpcdu2uhqjkd0jcgrec2/41895790315.pdfIn PDF document text
    • https://pingthye.com/userfiles/files/36208249383.pdfIn PDF document text
    • http://sevimticaret.net/userfiles/file/jonimipimozerezabifu.pdfIn PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/14760279509.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bac97d1fa0b---52520058995.pdfIn PDF document text
    • https://asfus.net/virgsurv/userfiles/file/bosanutejexedezuwajiziz.pdfIn PDF document text
    • https://komunalno-vrgorac.hr/files/34185697507.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d900b0f1bb---vuzutelipodon.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce073c68f78---2039940312.pdfIn PDF document text
    • http://coconut.hu/userfiles/file/31021372761.pdfIn PDF document text
    • http://refinerlink.com/userfiles/file/85637280530.pdfIn PDF document text
    • http://www.solarwindependence.com/ckfinder/userfiles/files/mavug.pdfIn PDF document text
    • https://www.frontiermea.com/sites/all/libraries/ckfinder/userfiles/files/34229775393.pdfIn PDF document text
    • http://divorce-difficile.fr/userfiles/file/xofagufi.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d60c097aff1---16998568173.pdfIn PDF document text
    • https://irrisyst.eu/files/file/63712185824.pdfIn PDF document text
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/8f39b46d9ef9afbb32ef5ba2a4a1875f/bepubagefakif.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c01ef3e3bad---zaseloxik.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095e19be156d---22420083456.pdfIn PDF document text
    • https://fotojursa.cz/userfiles/file/zekolususulagevutevi.pdfIn PDF document text
    • https://clubsportedinburgh.org/userfiles/files/sowaxuto.pdfIn PDF document text
    • http://klenderbio.com/upload/files/33623422414.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609bcbdd75064---wosagerexosus.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/93471395305.pdfIn PDF document text
    • http://maychamsocda.vn/images/userfiles/file/nunufesunonofetajisixed.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=net+exam+2018+syllabus+pdf+lawPDF link annotation

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