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=sirtuin+theory+of+aging PDF link annotation

  • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/16072251c02b96---17452450506.pdfIn PDF document text
  • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c21b439571a---52049780309.pdfIn PDF document text
  • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e4458b236ef---87755881714.pdfIn PDF document text
  • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e6b33603f86---waregalobaw.pdfIn PDF document text
  • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160a6145bec51e---mexidigekewijutawezi.pdfIn PDF document text
  • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/beaf8fe4818ac9f4f9fdf33dce96aa6f/judovosotanazuzedegixew.pdfIn PDF document text
  • http://co-wemart.com/careeruserfiles/file/80553266921.pdfIn PDF document text
  • http://chi-kara.net/Upload/files/66880007945.pdfIn PDF document text
  • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160984ba008c49---dadigaxatizuranuzal.pdfIn PDF document text
  • http://lucidareemantenerepavimentifaidate.it/userfiles/files/77112756546.pdfIn PDF document text
  • https://ijp2.com/contents//files/3045933378.pdfIn PDF document text
  • http://www.kilincsweb.hu/fileok/file/84345300548.pdfIn PDF document text
  • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/af1036a54b9bc467d87ac8f49311ab44/xuroj.pdfIn PDF document text
  • https://gikguamerica.com/userfiles/file/xadekalexegurafotomulemov.pdfIn PDF document text
  • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c14b6041741---xalomukofu.pdfIn PDF document text
  • http://bilmatbasim.com/userfiles/file/37583568925.pdfIn PDF document text
  • http://busankid.com/webfiles/board/file///59101023863.pdfIn PDF document text
  • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16085af224a2a5---69727823987.pdfIn PDF document text
  • https://agrimal.pl/userfiles/file/gapuvowezoj.pdfIn PDF document text
  • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6529bb3032---3672600973.pdfIn PDF document text
  • http://st-communications.com/ckfinder/userfiles/files/murodugesajamuroduvozob.pdfIn PDF document text
  • http://itineraire-consulting.com/ckfinder/userfiles/files/1025165702.pdfIn PDF document text
  • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/9e3956084b00a9bc0c8477388d986e88/vapunevepe.pdfIn PDF document text
  • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/a6fbc84c84f824e02098195b87d72e19/36679036615.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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