Malicious PDF — malware analysis report

Heuristics 7

• 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
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• 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://krisoc.ru/uplcv?utm_term=how+to+block+pop+up+ads+on+my+phone PDF link annotation

  • http://leaguengn.com/userfiles/file///23433463911.pdfIn PDF document text
  • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613b03bd33c69---depogexezew.pdfIn PDF document text
  • https://www.parquesanalbertohurtado.cl/ckfinder/userfiles/files/sexuzomureparipamaxapiko.pdfIn PDF document text
  • http://travelspace.pl/userfiles/file/23266884573.pdfIn PDF document text
  • http://budropol.de/Upload/file/kezedowefi.pdfIn PDF document text
  • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16141b45d8f79c---xeziwovavufenigekuvaj.pdfIn PDF document text
  • http://etcpremium.com/userfiles/files/49720430577.pdfIn PDF document text
  • https://businessincasey.com.au/application/third_party/ckfinder/userfiles/files/65107715787.pdfIn PDF document text
  • https://rabudiagnostic.com/userfiles/files/83414161728.pdfIn PDF document text
  • https://drosamahetta.com/userfiles/file/vuvefewaxa.pdfIn PDF document text
  • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/e38b020a6ad5ba634e9b3cc9428b1d26/28596172289.pdfIn PDF document text
  • http://acsalma.hu/userfiles/files/katutogitesozo.pdfIn PDF document text
  • https://vanrun-it.nl/userfiles/files/57929855600.pdfIn PDF document text
  • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/f59d3e041c2c6478bdf2136f5f0b0061/44824854726.pdfIn PDF document text
  • http://pc-driver.ru/userfiles/files/70475005614.pdfIn PDF document text
  • http://toptoptraining.ru/img/upload/file/berimovadokosafewalojaf.pdfIn PDF document text
  • https://colegiumaniucarei.ro/ckfinder/userfiles/files/30453018374.pdfIn PDF document text
  • https://holcom-solar.com/webroot/img/files/lonijirefoba.pdfIn PDF document text
  • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/q67u1j3f76diho5p7rpr9uvh76/zibagebegapexojuvaveri.pdfIn PDF document text
  • https://pfollowers.com/ci/userfiles/files/dujokofafobimotunejar.pdfIn PDF document text
  • http://ambulatorioveterinarioscapindandrea.it/userfiles/files/72134276934.pdfIn PDF document text
  • https://sport-jicin.cz/dokumenty/dutoxajiwu.pdfIn PDF document text
  • http://woodbridgeabw.com/uploads/files/kigelazanevubusikiluv.pdfIn PDF document text
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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