Malicious PDF — malware analysis report

Static analysis result for SHA-256 7658c71c44b3190e…

MALICIOUS

PDF

62.6 KB Created: 2021-05-03 15:59:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 192b93f658b8d82d57bc38a879ad901d SHA-1: a88ebd36fad6cda98cbadb5c29f6b468fe2e0c3f SHA-256: 7658c71c44b3190ee24ffd88ff9fa150a6b39c8de6e2151154d6a4f0bfa24616
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm pointing to compromised WordPress sites, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing lure, likely designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7778

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://www.hausbootgeiseltalsee.de/wp-content/plugins/super-forms/uploads/php/files/qbqa0vnctlnrm79gdov7vrj7k1/seduzibozagupejatamulesun.pdf
    • https://www.cpro.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607177c759a0e---94403400224.pdf
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/5c949e084d49d87a0066e8b377c565eb/pexosisajunozibe.pdf
    • https://www.treehousecare.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6423a3744---nazizugobupajugujolowezit.pdf
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/19lg1h9f9ptujdjd6khdcbmcbi/xojopupifukumofara.pdf
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc7daaddef---xudixesuwujobisakoxazu.pdf
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/7tktjiccvadq9dsliq2nd302ih/93222894514.pdf
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083442494ea0---80067318425.pdf
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2d202e859be00148baf757a711451c61/nixaroju.pdf
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/cknf8pg94t8687tlhf7d98fem3/dekozegegaromezit.pdf
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160759ff1da434---sesuzo.pdf
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/3c745543730af87ad77750453fcb8a6f/xajexaximige.pdf
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160842aa4120b3---24327611657.pdf
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16070f7d056802---jowiremexodop.pdf
    • http://forter.vn/hinhanh/file/32499023298.pdf
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607b4dda5557d---sidugobakavezijolitowef.pdf
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/96c9a66ed3bb3393659d5e6581552ef8/82839083952.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=bcom+1st+year+english+notes+pdf

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