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
• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://pistant.ru/uplcv?utm_term=the+ripple+factor+of+a+bridge+rectifier+is+mcq PDF link annotation

  • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/861lnsuhkl353eudv6vc7q6igj/tizonax.pdfIn PDF document text
  • https://rocksoliddesigns.biz/userfiles/file/14727276400.pdfIn PDF document text
  • http://piau-po21inn.com/CKEdit/upload/files/15362895783.pdfIn PDF document text
  • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d6051e15f6a---xidoxumisoxudidojebofepu.pdfIn PDF document text
  • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16091c20e22a60---gusanivexezakigubabif.pdfIn PDF document text
  • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/a7a31e75d1c98cd637e95a4a739f68f0/gopuboke.pdfIn PDF document text
  • http://aldo-ins.com/userfiles/file/nepigixuxepajun.pdfIn PDF document text
  • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/5a114aedda8d41ea3b73f04a985e727f/wujisizevokelug.pdfIn PDF document text
  • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160852c33e8b46---14927718164.pdfIn PDF document text
  • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608670faec164---35807381369.pdfIn PDF document text
  • https://chmelo.hu/sites/default/files/file/viruxad.pdfIn PDF document text
  • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/c555a6a508652cc8abb39beed116cfbc/6939701911.pdfIn PDF document text
  • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160796b36d7ce0---89969579293.pdfIn PDF document text
  • http://thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/19958572403.pdfIn PDF document text
  • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/1f3de61d6567eccc07a9cc86b5592757/nitelavusi.pdfIn PDF document text
  • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160828b4e3fc15---73772259339.pdfIn PDF document text
  • https://yz-yongzhong.com/upfiles/editor/files/62660377936.pdfIn PDF document text
  • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1607483a2330d6---95931124928.pdfIn PDF document text
  • http://arohitourandtravels.com/userfiles/file/25704330023.pdfIn PDF document text
  • https://vydavatelstvoklett.sk/userfiles/file/41450172985.pdfIn PDF document text
  • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/16082b62233fd0---xowokitotukuliputun.pdfIn PDF document text
  • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/c30780c7594bb71ecd760b4a0d784058/64137832274.pdfIn PDF document text
  • https://icoachyou.biz/images/ckeditor/files/64325972057.pdfIn PDF document text
  • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/39dfbf961bc9173b66cec8327fb122a0/83086684981.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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