Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd97daba2ea6d87c…

MALICIOUS

PDF

49.8 KB Created: 2021-09-04 22:51:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 876bdd6a8d2a418ac559b9f2068552cc SHA-1: d01915e5afc3d7b5fb029cec89fe22ae17ee899d SHA-256: fd97daba2ea6d87ce8b4df362abb047e024597137116f4c9c84afcb7dc010870
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external links, many of which point to compromised CMS upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded JavaScript is a common technique for executing malicious code or redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8493

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e171a7c773f---51644161676.pdf In PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/f2c7f0138de5d74aaec92036e8f1e8e5/57940788313.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607b98f93fee1---tikojexovokolamifugoxaj.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/86e15880591e038137be7fe5e4f9683d/sefelujexotu.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/63113121091.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855079c8b94---rususuf.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076bc0376103---xenopegegosotudetijar.pdfIn PDF document text
    • https://pendekaremas.com/contents//files/fujolimasobogugagodora.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/ab8ddecfbe131a7bc1af1ae7af442ff7/rivotatujuzuwulafasa.pdfIn PDF document text
    • http://gro-felix.si/uploads/53278202270.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16083f9d7a44c8---19852490653.pdfIn PDF document text
    • https://amd-export.com/site/upload/file/35599325127.pdfIn PDF document text
    • http://christopherspubandgrille.com/userfiles/files/nefikofu.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/7778331e0b67c2397d847c75bfe297f4/50127354500.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/pabofovazajosumelum.pdfIn PDF document text
    • http://attlas.center/userfiles/file/jumozojalidif.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acff166de48---norojezuloj.pdfIn PDF document text
    • http://oodow.cn/upload/file/210708080506874305aggxvhg959w5.pdfIn PDF document text
    • http://korea-labels.com/ckfinder/userfiles/files/21918945845.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae4e4d6874---26883643253.pdfIn PDF document text
    • http://e-hematologica.com/users//file/96490221917.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1e983be299---mawid.pdfIn PDF document text
    • http://battlegrouponline.com/app/webroot/js/ckfinder/userfiles/files/memubamasotazavinized.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef5213c687---56620413696.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ac813871120---44863553552.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=interchange+third+edition+intro+workbook+download+pdfPDF link annotation

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