Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3d40356ca4c1d3d…

MALICIOUS

PDF

61.6 KB Created: 2021-06-09 16:52:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: cbf554e3fb463a53b69f222a9194e060 SHA-1: bdc09f902bace8c18aefaf6ce76bddc3da99688c SHA-256: d3d40356ca4c1d3dbe9722bd6118bdc024cc85865025563419732458f5869557
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains references to 'movie free download' and 'wkhtmltopdf', likely a lure to entice users to click the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7196

Heuristics 5

  • 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.
  • 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://crewmak.ru/uplcv?utm_term=kuch+kuch+hota+hai+movie+free+download PDF link annotation
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160884efc578ec---vudunufobugetekivit.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/hk05ikflc6emsst9rtvnkeqlko/19001545462.pdfIn PDF document text
    • https://riolospettacoli.it/filesUploads/file/70299430711.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc7fba814a6---15326928167.pdfIn PDF document text
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/d871c812cdda1b30d689ac0b7c125d71/15661024558.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/77172073826.pdfIn PDF document text
    • http://lucann.com/Upload/file/pawefafalijuzadeneli.pdfIn PDF document text
    • https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/65a1bo0q56l3o92qgpnpkpujra/42314074804.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/6c050bc10c15a1f21c38a634ca8b7ca5/54024318907.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/8ecipv0upn4idlmtmjrvt1emk6/8668632731.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/t9esth1dr093d320s10044st56/sapopeviritakekuw.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/c51327d1fe92f2ffc6f33e7b4babb757/zegorigojazexi.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4520b64c8a---bateruwukivotaluxi.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609f72081b7c7---gubujasujodunasukivazu.pdfIn PDF document text
    • http://facilitymanagementassociates.com/survey/userfiles/files/fowumud.pdfIn PDF document text
    • https://bilegt.mn/userfiles/files/39762847824.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/4i9u29o6bboq1mhu6jhvq3qtbi/72109702981.pdfIn PDF document text

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