Malicious PDF — malware analysis report

Static analysis result for SHA-256 c42d879de375c6de…

MALICIOUS

PDF

46.9 KB Created: 2021-09-06 08:00:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 3b354f1dfc07a005065be6b61f5366a3 SHA-1: 0ef5d3762330c54f7a1856da8897fba625e7dbf6 SHA-256: c42d879de375c6de16bc0c93702f6d83437530e9a44db8ec7809026a331f5758
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. Heuristics indicate it functions as a link farm, with many URLs pointing to compromised CMS uploads and disposable hosting, likely to distribute further malicious content or phish users. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5992

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://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161303a1540908---44328207938.pdf In PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d841da7e55d---keropedizowekasu.pdfIn PDF document text
    • http://keifo.ru/ckfinder/userfiles/files/55092952216.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/6du2kknhq73bfi25hjvvffpmsh/tuzixavoket.pdfIn PDF document text
    • https://hssanesteban.cl/files/riditeporejaritotodipaga.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/sunesuwavurug.pdfIn PDF document text
    • http://digemnd.com/UserFiles/file/18627451094.pdfIn PDF document text
    • https://mar3ol.com/Files/files/43308443776.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612d1a899c640---jodemitavazazepiwuraxa.pdfIn PDF document text
    • http://wenxuezj.com/images/File/61997712800.pdfIn PDF document text
    • http://mtcongnghiepxanh.com/upload/fckimagesfile/10538968498.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4cd7019c73---39007435752.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160d79f475bbca---bumusudeguzupezal.pdfIn PDF document text
    • http://cropscipublisher.com/files/upfiles/file/lopuwepejaremojej.pdfIn PDF document text
    • http://sanarina.de/ckfinder/userfiles/files/51727502022.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607b12ae70ae4---fividoj.pdfIn PDF document text
    • https://btegypt.com/file/95085663651.pdfIn PDF document text
    • http://chaitraglaze.com/uploads/44707948213.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/d5f77911eb715f2fc76ec11d07a17e8c/89069624473.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/22066fc9410dffcdac8dff3c30d275ea/buxaruzidinofume.pdfIn PDF document text
    • https://stoneappeal.in/FCKeditor/file/38506151173.pdfIn PDF document text
    • http://irrisyst.eu/files/file/pobuliluzabapamo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=planning+and+positioning+in+mri+anne+bright+pdfPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.