Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb81a62387fffd48…

MALICIOUS

PDF

247.3 KB Created: 2021-07-02 05:04:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 3b1a2738bf4dd9cc969682a9cf34476f SHA-1: f9d9e3680480a2fe4d983297f313f4a0e9c730d6 SHA-256: cb81a62387fffd4824086351fbe313cb20c4bc19dca0a86eefdc208953d37890
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, suggesting an attempt to host and distribute malicious files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of multiple compromised upload links points to a pattern of luring users to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7848

Heuristics 4

  • 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.
  • 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://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16085a92317c57---soritaranojomu.pdf In PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc44802a30---nidawer.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096e2609c045---82284041523.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c2a76b0ca33---wobujawifolelejawo.pdfIn PDF document text
    • http://bluekeydigital.com/images/pic/file/jukimigisi.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/68216984159.pdfIn PDF document text
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/fsnma2ar9uoav8un5765cupb4k9qs0qp/35376822933.pdfIn PDF document text
    • http://neilreardon.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/11427774849.pdfIn PDF document text
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/0369021fe01b98830d21182cc39cd749/gedutilarilu.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d8a778fe6---69659828577.pdfIn PDF document text
    • http://myucmas.com/userfiles/file/topegadufan.pdfIn PDF document text
    • https://visionbrindes.com/admin/fckeditor/userfiles/file/bolixawobewik.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608495143f9ab---1017089574.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/4adffb57b053a907bea2cf25a8c23bf0/lebowugelodileku.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606c79d872b8e---talasulewasiviluluxog.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/233n74tomu1agrn297tbhfllu0/guwuxuwefi.pdfIn PDF document text
    • http://contrast.no/ckfinder/userfiles/files/12622099488.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607519761478a---76004716886.pdfIn PDF document text
    • http://goldnumber.info/userfiles/file/demusasijapijil.pdfIn PDF document text
    • https://zenmobile.in/jaipriyart/uploads/files/noget.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/01802a69bfc5d9e55fd1370fc970b9e0/zowokirezuluze.pdfIn PDF document text
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/nenigibilegedeweso.pdfIn PDF document text
    • http://hyperasp.net/userfiles/file/24003710959.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/e9e19df554bdcb3108286b13aac11255/fifepiwirunabano.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/9l2vn0t3nqhs23jd2vbbo506od/rotalapu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=jekyll+hyde+confrontationPDF link annotation

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