Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c75acc44b654d7…

MALICIOUS

PDF

41.5 KB Created: 2021-09-27 00:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 1a1a5cb3d436a7a0e88619a42e8c71ec SHA-1: c77fe5f02aba73980db1afd1fbc2217f43458962 SHA-256: 07c75acc44b654d7b1467da8f6108b76559ac8cd5a77d88a483b552ffa749327
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-heavy nature and embedded clickable links. The ClamAV detection and ML classifier further support its malicious classification. The document contains numerous links, including one pointing to a compromised WordPress upload directory, suggesting it's part of a link farm designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7349

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://faceless.me/userfiles/files/jigat.pdf In PDF document text
    • http://xn--aknmedical-yub.com/uploads/file/27613764801.pdfIn PDF document text
    • http://mnwebdesign.dk/userfiles/file/35911951117.pdfIn PDF document text
    • http://pijntherapie.be/uploads/files/noxonuvukopixusivezude.pdfIn PDF document text
    • https://cuisinescartier.ca/upload/editor/file/20563693581.pdfIn PDF document text
    • https://fotobolfestmeny.hu/mvc/userfiles/file/pirenuruwot.pdfIn PDF document text
    • http://tandprotheses.com/ckfinder/userfiles/files/24820358409.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613db980c0ea7---matebokubowutulapofax.pdfIn PDF document text
    • https://chung-pei.com/userfiles/file/zemazekamit.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/lufurujojevi.pdfIn PDF document text
    • http://yushendesign.com/images_fck/file/1630858827.pdfIn PDF document text
    • https://fiberglasssupplydepot.com/userfiles/files/74001198432.pdfIn PDF document text
    • http://ventima.ru/userfiles/file/tepuwoxibiro.pdfIn PDF document text
    • https://nieruchomoscikomercyjne.co/files/file/daralabomijesezuzigiwuri.pdfIn PDF document text
    • http://titadoorbinhduong.com/upload/files/jatebilovegumumepaf.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/2d1efe6d08920e7958d04d9867db4dd3/fatiroxefurukonanitir.pdfIn PDF document text
    • http://hflchw.com/upload/file/2874661058.pdfIn PDF document text
    • http://28777886.com/Lpf/UPFILE/userfiles/files/24769366980.pdfIn PDF document text
    • http://princeverma.in/uploads/files/bobobobopabofixajura.pdfIn PDF document text
    • https://ijp2.com/contents/files/98860048626.pdfIn PDF document text
    • http://carsonpokebar.com/uploads/files/30796641242.pdfIn PDF document text
    • https://asztromiskolc.hu/ckfinder/userfiles/files/40064533192.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16138000b8085d---90287688243.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=google+bypass+softwarePDF link annotation

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