Malicious PDF — malware analysis report

Static analysis result for SHA-256 a783633af1e06ba6…

MALICIOUS

PDF

59.8 KB Created: 2021-06-27 06:04:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: d8f55dec78b9c8d8d137556773324bc1 SHA-1: ce94ed8f1c498e64ae9eeae2dd7e061b74e4b693 SHA-256: a783633af1e06ba684de86c2839c0d24c4619b86f4f06aa9d9b1674bf08e1560
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external links, many pointing to compromised WordPress sites. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or malware distribution intent. The embedded JavaScript likely facilitates the redirection or exploitation process.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3485

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 https://philabc.ru/uplcv?utm_term=anybooks+mod+apk+free+download PDF link annotation
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/5c2cf28a2b2e5101b9fda87f9f4b1eb4/15876098517.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ac313707894---devupawugedijekitosimevo.pdfIn PDF document text
    • http://lamachine.nl/userfiles/file/jilef.pdfIn PDF document text
    • https://maintogelonline.info/contents//files/61535585185.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd4f713bab---52361328871.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b64c27eb4af---98931556381.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094cd4faedf9---mamozesudunene.pdfIn PDF document text
    • http://arunimaflavours.com/userfiles/file/buforivapotedopo.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071e892d2019---bavuvotuni.pdfIn PDF document text
    • http://paillasse.hu/userfiles/file/23755490917.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/0023baa75265328569c98c601892c551/21413328464.pdfIn PDF document text
    • http://teifsepahan.com/files/file/gopajalipupuvenuwix.pdfIn PDF document text
    • https://by-express.com/upfiles/editor/files/51009604132.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f477f6c979---79555179178.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/a61bc62e661b5ae013890026f487098c/muwafoduwewoxeki.pdfIn PDF document text
    • http://cfacgroupe.com/uploads/FCK_files/file/90517077774.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bd0da5e259d---30753247324.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c536369a375---vuvekafemagemutum.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609f9b20acc4a---75081411094.pdfIn PDF document text
    • http://stellamaris.cz/userfiles/57632161740.pdfIn PDF document text
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/56e794152d92e78dc1c3a9fe4d789d52/41535921159.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc873d03f1---56537136524.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/26477b1234998a4351161a46092c54c9/nusekewemofozelivapo.pdfIn PDF document text
    • http://cathyourhair.nl/js/ckfinder/userfiles/files/32985996927.pdfIn PDF document text
    • http://hodinovysoused.cz/upload/file/bebuzal.pdfIn PDF document text

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