Malicious PDF — malware analysis report

Static analysis result for SHA-256 f00d87bc41e74878…

MALICIOUS

PDF

70.6 KB Created: 2021-09-20 03:24:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: dc903d9eaad3b7cbf1ef70c3001fe827 SHA-1: b4573ea2c2c9f6d9cfda34229edc3fb97b3f2f29 SHA-256: f00d87bc41e74878af3c770c8fd76690ed470c7ef0e75cf5161987f4d0b2b0f8
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed to redirect users. ClamAV detected this file as Pdf.Phishing.Trojan, suggesting a phishing or malware distribution intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious redirection tactics.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3494

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://coretry.ru/uplcv?utm_term=foundation+engineering+pdf PDF link annotation
    • https://testpensija.bankai.lv/ckfinder/userfiles/files/rovevibexugetawujiluxako.pdfIn PDF document text
    • http://kondicionery-lobnya.ru/upload_picture/file/porowur.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/u8af3pk8u7vq7p8lfnf3o17to6/95752012678.pdfIn PDF document text
    • http://heldermusic.nl/ckfinder/userfiles/files/zagovu.pdfIn PDF document text
    • https://samarthanamparisara.org/apadmin/uploads/userfiles/files/lirojodogobo.pdfIn PDF document text
    • https://devcons.org/uploads/userfiles/files/ledoz.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/161408a7883ac8---7800572563.pdfIn PDF document text
    • http://salkim.com/userfiles/file/858999110.pdfIn PDF document text
    • http://piqiso.ru/userfiles/file/83211540381.pdfIn PDF document text
    • http://jingkangchem.com/upload/files/fujoke.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/bemenokowivu.pdfIn PDF document text
    • https://sukienmiennam.com/userupload/files/vederikugusafogom.pdfIn PDF document text
    • https://contact-house.com/fckeditor/upload/file/jufufo.pdfIn PDF document text
    • https://infypos.com/infyposcms/media/58764478385.pdfIn PDF document text
    • https://vipbeachhouse.com/uploads/editor/file/31487708144.pdfIn PDF document text
    • http://ana-jsc.com/upload/files/26800950754.pdfIn PDF document text
    • http://ky-auto.com/uploadfile/files/dutidizafujudekurotobuz.pdfIn PDF document text
    • https://davidfauquemberg.com/home/fauquemb/david/bbdg_site/userfiles/file/2772783274.pdfIn PDF document text
    • https://inprovitpuertorico.com/ckfinder/userfiles/files/xusenaviwad.pdfIn PDF document text
    • https://eastmangroup.org/ckfinder/userfiles/files/24170297891.pdfIn PDF document text
    • http://myarrahnu.com/mo_images/files/45273355407.pdfIn PDF document text
    • http://mlsy.cz/images/file/files/wuloroligesuporowiz.pdfIn PDF document text
    • https://foundlight.ca/home/foun6192/public_html/files/custom_files/file/zinejokagawufit.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c35e101fc0---jupuza.pdfIn PDF document text
    • https://mehfermobilsaglik.com/userfiles/file/32180944227.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1613e05cb450c6---73857907497.pdfIn PDF document text

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