Malicious PDF — malware analysis report

Static analysis result for SHA-256 e567d30b64af792b…

MALICIOUS

PDF

59.8 KB Created: 2021-07-21 12:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 33c1f221d2ab0d1fbc330627d3cbce4a SHA-1: 2c2d94933a8e192fd40504d02b5874f183ada2c1 SHA-256: e567d30b64af792bdf63bdbc9fc9622085d4b1c5db0ff170fad2a3c14779583d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document identified as malicious by ClamAV and an ML classifier. It contains a link farm pointing to compromised WordPress upload storage, suggesting it's designed to distribute further malicious content. The presence of external URIs and a link farm indicates an attempt to redirect users to download additional malicious files, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5356

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 https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/af01f6ce5747ee4bcc3dabf44c71968f/fomozafosivizese.pdf In PDF document text
    • http://wmehoa.org/clients/d/df/dff1b85474dadb967ea0c40f6d5e37f8/File/42196484768.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab9fc10b48---28619202695.pdfIn PDF document text
    • https://plentis.eu/ckfinder/userfiles/files/dixifasalakuri.pdfIn PDF document text
    • http://lbhodgereunion.com/clients/3/38/38e1f81cb1ac74d12d86c8ba87866b9f/File/lalowapigipubowosixin.pdfIn PDF document text
    • http://luatsubienhoa.com/upload/ck/files/vatenem.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/901bf407bc565d174dbfdd91347291b2/31070900704.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f6565e05eb3---bivogimapamibasedemupu.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a77e9332d81---63787907259.pdfIn PDF document text
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/7f0ce847a5afc1b99e316cb6d317f2b3/nopinuvidebosusowelom.pdfIn PDF document text
    • http://www.johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/sovugilefu.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160962969d8bd5---ripevisuwotepek.pdfIn PDF document text
    • http://bestbelly.org/content/files/files/lumaropilurufebaz.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607597e6cb967---99073329516.pdfIn PDF document text
    • https://airshow-bg.com/file/dopevabijikukapozad.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/8da09517b126327f325c5a535016bc31/vudoxojopofu.pdfIn PDF document text
    • http://lnshiyue.com/userfiles/file/20210721095807_499981630.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608497242ed5c---fekurazifapapij.pdfIn PDF document text
    • http://safarang.com/basefile/files/rujadefobiruwikomu.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/acefb92b4f17959c86a53a740e635784/tafitatisuwobuxaza.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2b941e2f01---71189226107.pdfIn PDF document text
    • http://myafmc.com/clients/a/a5/a51d49d85de18111a3d718c63a5e5081/File/4865871380.pdfIn PDF document text
    • http://qbcar.ru/ckfinder/userfiles/files/dokumizinekujiluzus.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/16087990852bf9---boriraxevan.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=hepatomegaly+size+in+cmPDF link annotation

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