Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac1eae4aa35f5ad6…

MALICIOUS

PDF

48.0 KB Created: 2021-09-18 22:30:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4341856c9950de12f551508c8907a9b0 SHA-1: 607957a7d7ba9335b3150115d9eb99fbf641c763 SHA-256: ac1eae4aa35f5ad674a39575cfefef6de58baf18a349618347bdfc27d08cf397
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm, with multiple URLs pointing to external websites. Some of these URLs are hosted on compromised WordPress sites, indicating a potential phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8101

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 http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a02ccc2585---futuriforabasej.pdf
    • https://dpt-mh.com/uploads/news/files/pajuvulinuk.pdf
    • https://receptabc.hu/images_banner/files/jaragufidifuxe.pdf
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136f761db88d---kapudadevutuludadope.pdf
    • https://atlantidegattico.it/file/fudugazawug.pdf
    • http://gtlfuelmarine.com/userfiles/file/55004033699.pdf
    • http://hongsung114.com/files/fckeditor/file/22800979529.pdf
    • http://paradoxine.com/upload/files/gilunamorakuxowozos.pdf
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613abb60483b1---16310065670.pdf
    • https://anandalaya.in/resources/file/23561156485.pdf
    • http://ilovehikari.com/uploads/files/mexobel.pdf
    • http://3qbuy.com/CKEdit/upload/files/38355884978.pdf
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/16140d6cad17db---12128524730.pdf
    • https://projetounificado.com/uploads/files/veledepususadaviputan.pdf
    • https://sanipro.ma/app/webroot/uploaderfiles/pasafuzolufepaseravota.pdf
    • http://bachtungcompany.com/upload/files/29545961091.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=6+iron+loft

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