Malicious PDF — malware analysis report

Static analysis result for SHA-256 82784c43f0c3421d…

MALICIOUS

PDF

56.2 KB Created: 2021-06-20 12:06:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e6dd337842d87626a748bf03f8e5fcca SHA-1: 88b35d14135112522ab668f671fef401a94c1502 SHA-256: 82784c43f0c3421d956d6e58b70f2b3d4ee9fd30f77769b4a19065729eb6fb58
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links to compromised WordPress sites, suggesting it is part of a link farm or phishing campaign. The document body mimics search result snippets, likely to deceive users into clicking malicious links. The ClamAV detection as Pdf.Phishing.Trojan further supports its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5645

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://queure.ru/uplcv?utm_term=charlie+and+the+chocolate+factory+book+age+level PDF link annotation
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/9fb0f0acd4e5c43d0af319c7a0dbf743/jivuvufujul.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/e27f12866bbc8e4624f0842fb14a238c/rezadinexipazurexituxobom.pdfIn PDF document text
    • https://telenovella-bg.com/files/5380223737.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087cf85d4e21---53037684665.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/3f74b289e46e9a03eada1bee999c5662/88269892690.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/stqsug7biv9sl0ngc7icovfrk2/vonak.pdfIn PDF document text
    • http://etcad.net/np/upfile/file/37595702758.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/tokexod.pdfIn PDF document text
    • https://martabaktelor.com/contents//files/97569704545.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/a9a95eebe388e90f5abd346e2d2af0de/31066840427.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c40be6306bb---xekurodobu.pdfIn PDF document text
    • https://binarbaidrealestate.com/public_html/userfiles/file/numokonumipizumitedeg.pdfIn PDF document text
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/f2da2b4c0cead01840f44eb7f5b4d23d/89483013251.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/7336513cc75e60c99536c2f245b6c421/93265404597.pdfIn PDF document text
    • https://ladangmimpi.com/contents//files/58132318762.pdfIn PDF document text

Related samples 8

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