Malicious PDF — malware analysis report

Static analysis result for SHA-256 58be6154e0faae9e…

MALICIOUS

PDF

45.6 KB Created: 2021-07-14 04:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 7f6d14d018266e15dc0e0bceb26018bc SHA-1: 47ea71963a0ac04eeb82df78615a86f899295246 SHA-256: 58be6154e0faae9e846dd4c0ba0bcc75051297086f17484376285a7bc6ce8f66
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a phishing campaign, leveraging a link farm to direct users to potentially malicious PDF files hosted on compromised WordPress sites and other domains. The presence of numerous external URIs and the ML classifier's high confidence score indicate a deliberate attempt to distribute malware. While no scripts were extracted, the PDF structure and URL patterns strongly suggest a phishing lure designed to trick users into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7407

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e785b27367f---rovuluzipofevewidumeliw.pdf In PDF document text
    • http://hnsunnyfood.com/d/files/jamafular.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/25144adfe4327084a6035a9f6de00fee/wirizemejafozobimepomad.pdfIn PDF document text
    • http://artistalexanderkanevskyroyalshakespeareglobetheatrelondon.com/clientMedia/file/fuxilurevivegozu.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4d59d99e68---94417774138.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091b2c0f2e4d---novepag.pdfIn PDF document text
    • http://thunderstar.cn/userfiles/file/20210530030427473606824.pdfIn PDF document text
    • http://grupopiscis.com/upload/files/80784206514.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bffe41af18d---53318155829.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/mo9r62c6fniouda9j6oi4lr37n/nalopavewut.pdfIn PDF document text
    • http://fhhsclassof70.com/clients/4/42/42ce21dc30e429aa976ba070b22ccf93/File/43916392143.pdfIn PDF document text
    • http://bocghedanang.com/media/ftp/file/sevonomuredaxiri.pdfIn PDF document text
    • https://dixietemporarystorage.com/wp-content/plugins/super-forms/uploads/php/files/d35a812b930f418a03487c742336cbce/vanobozaderupigine.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/99c98ac252f43a92b98ec9a5ea6eab0d/bonemolarakozuposoraxen.pdfIn PDF document text
    • https://alatheir.com/atheirwsfiles/file/xakebasopufukuvixul.pdfIn PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/8af88dcece57a58b4fda1d8e392387f8/kasetimirupaxuj.pdfIn PDF document text
    • http://minutemen-jrotc.com/clients/84940/File/1955230484.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cca4607a71---vabaxuvegitetanorewu.pdfIn PDF document text
    • http://henghuitong.com/jingkelun/userfiles/files/20210626065104.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/16094917db65e5---xozimabegizigokeki.pdfIn PDF document text
    • http://cosonhuath.com/hinhanh_fckeditor/file/21925124341.pdfIn PDF document text
    • https://hse.tw/upload/file/kebarefilimelug.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec57db685a---93223092588.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=how+to+tape+up+your+shoulderPDF link annotation

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