Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e44f2722ea5e6e3…

MALICIOUS

PDF

62.3 KB Created: 2021-07-01 12:43:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-03
MD5: 676e1c6fec1ddae2cca7374c478bac4d SHA-1: 5ef8cda36997e47088c5f3298b8c2e0d1d525e06 SHA-256: 6e44f2722ea5e6e313e78ac6a5f7f15ac4bcf87fd1d0fc232a064d6993863f5a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links to compromised WordPress sites, indicating it functions as a link farm. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, potentially delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5915

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://cructi.ru/uplcv?utm_term=trailside+at+hermosa PDF link annotation
    • http://fixafilm.se/userfiles/file/xapasigamadutufovar.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160c0ed8330d32---gepemasezuvovoli.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/a729201ea7d5108f47182ea07018729a/83430091575.pdfIn PDF document text
    • https://parokisantolukas.org/Uploads/userfiles/files/85005972644.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/cc2e7e4102490bf573ad6213c811a95d/77739434007.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/0f42b3159192cfaeab438db5806b3fec/5037835231.pdfIn PDF document text
    • http://ekotronic.eu/files/file/2245213541.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0037af108---pogavigebiderakukid.pdfIn PDF document text
    • https://drinkpoint.com/uploads/files/10236257965.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c148c0c852---netofi.pdfIn PDF document text
    • http://drsuthichai.com/userfiles/files/koruwixifojuxuzuvudud.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/4rmu47pmpuq9l49lrq0h6aiq23/vebamirabaduva.pdfIn PDF document text
    • http://4seasonstours.in/userfiles/file/minotefob.pdfIn PDF document text
    • https://immobilgold.com/file/874642862.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/177251005460a4695d59f79.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160847e4d31ec7---86308609501.pdfIn PDF document text
    • http://fittbikese.hu/files/file/zulunow.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/9d68d1gjq9iccos98lbis65050/jokikogegomomitamumotod.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/404f8ad960c76c607870cc5ea1f198e0/gekawozugamurikik.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160707d309aff0---97483769236.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160775100ca3a3---gotivigo.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076a2e0c53aa---27100130304.pdfIn PDF document text

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