Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• 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://cructi.ru/uplcv?utm_term=how+to+add+sd+card+as+internal+storage PDF link annotation

  • http://studioboscono.it/userfiles/files/20270555349.pdfIn PDF document text
  • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1612f868707c32---wibamusagedazubuzudulin.pdfIn PDF document text
  • http://bharatdarshan.net/rgroup/ckfinder/userfiles/files/bigetuvoxebanojebawoloka.pdfIn PDF document text
  • http://shipagents.nl/uploadfiles/file/82672270309.pdfIn PDF document text
  • http://www.ez4parcel.net/upfile/files/2021/09/24/24746683481.pdfIn PDF document text
  • http://keyflounge.nl/userfiles/file/tudafa.pdfIn PDF document text
  • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/f8007ce798e707e08a95fceab3f1757f/44105565260.pdfIn PDF document text
  • http://wwsm-hk.com/files/file/73177359994.pdfIn PDF document text
  • http://probeg2000.ru/files/userfiles/files/72908910824.pdfIn PDF document text
  • http://www.gleason.com.au/application/third_party/ckfinder/userfiles/files/58047451687.pdfIn PDF document text
  • https://oncallanatomist.com/ckfinder/userfiles/files/92260453213.pdfIn PDF document text
  • http://akekaluck.com/ckfinder/userfiles/files/20846385119.pdfIn PDF document text
  • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/161420c1ada10f---vixezorij.pdfIn PDF document text
  • http://nanumed.ro/uploads/files/49614829042.pdfIn PDF document text
  • https://clubkdo.fr/img/pics/files/38700056466.pdfIn PDF document text
  • https://nepaltrekkinginhimalaya.com/assets/userfiles/files/vifilale.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e97ae3dfb3---61675884939.pdfIn PDF document text
  • https://aslimitada.com/userfiles/file/paxezavukozug.pdfIn PDF document text
  • https://aymfly.com/aym_image/files/89982472039.pdfIn PDF document text
  • http://julianowka.pl/ckfinder/userfiles/files/lovasofurinukak.pdfIn PDF document text
  • http://wooshin.kr/uploaded/file/12115155066130cfe934fa4.pdfIn PDF document text
  • https://tolgyesvolgy.hu/userfiles/file/29271150727.pdfIn PDF document text
  • http://nmways.com/uploads/fckupload/file/sitegapotiriparazubetikob.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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