Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0576533a2e8fcb1…

MALICIOUS

PDF

57.2 KB Created: 2021-09-06 11:19:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 58f315c8192bb0ca8780b87f1c119db7 SHA-1: 0be1282a23782a8dd52f22c7845e809fa80514ef SHA-256: b0576533a2e8fcb1c0f191676957d2a3d62577d6fd061ba6e42b1c99866ef276
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites. These URLs are likely intended to lure users into clicking them, potentially leading to further malicious content or phishing attempts. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or link-farming attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7557

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://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/sbe491srhp68614qjsuefjj9ep/7867032589.pdf In PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16111c75d360b0---bulowijuzelimexojotugozes.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/a6aff7b4c2984788678e30c64898ead5/92787975790.pdfIn PDF document text
    • http://synowka.pl/galeria/file/78644116858.pdfIn PDF document text
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e83e63f24b---63455259029.pdfIn PDF document text
    • http://cfh2.com/clients/d/d2/d2a7b52150a7a947468b52e9b7560e3c/File/murek.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/4g9mnfr8ls6s2b51r6okqh7qfa/18802198612.pdfIn PDF document text
    • http://banghaija.com/userfiles/file/46052329352.pdfIn PDF document text
    • http://bearings-home.com/userfiles/file/jibebasazarubakebigavut.pdfIn PDF document text
    • https://marwaautorepair.com/nbloom/fckuploads/file/95247709079.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/d6dadd174fd275866c35708f805bd462/90883220183.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1611e3e032eb87---42477514744.pdfIn PDF document text
    • http://centromp.it/userfiles/files/40230259666.pdfIn PDF document text
    • http://wujipacking.tw/upload/files/vagiwaferuf.pdfIn PDF document text
    • http://gallery4walls.com/upload/editer/file/69215458081.pdfIn PDF document text
    • https://aymfly.com/aym_image/files/rudajupotawotananikadado.pdfIn PDF document text
    • http://svaz-podnikani.cz/files/file/defubimidifamotofawewako.pdfIn PDF document text
    • https://kabelkyaobuv.sk/editor_uploads/files/86450021241.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607894589be88---28806882059.pdfIn PDF document text
    • http://xn--80affcyoc0ac1f6a.xn--p1ai/admin/modules/ckeditor/ckfinder/userfiles/files/69932422024.pdfIn PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/gkp24ajhh0eim7fsucveqiej0j/83672130207.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c2d0da86464---pedegoxafebuvojugifuxun.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/c4db086ad1510a125f2af5affd92a7f7/10236490282.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=livros+veganos+pdfPDF link annotation

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