Malicious PDF — malware analysis report

Heuristics 9

• 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 68 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://inwebjor.ru/uplcv?utm_term=embedded+microcontrollers+pdf PDF link annotation

  • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/e3efada76a07b01154d1e2653126a718/98251080759.pdfIn PDF document text
  • https://poldercuptrofee.nl/site/admin/ckfinder/userfilesfiles/65478748816.pdfIn PDF document text
  • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/2da9142279c8355f8e3f47ac67b4f9b9/55683506687.pdfIn PDF document text
  • http://progetec.org/userfiles/files/woridetomafejo.pdfIn PDF document text
  • http://cuoredicane.it/userfiles/files/31078531644.pdfIn PDF document text
  • http://dlastudenta.org/Upload/file/67554095258.pdfIn PDF document text
  • http://agriturismocorteerbatici.it/userfiles/files/wuwexisiretiguzipeneridif.pdfIn PDF document text
  • http://szm.hu/userfiles/file/27850585687.pdfIn PDF document text
  • http://carnow.jp/js/upload/files/lisujaxajonuku.pdfIn PDF document text
  • https://www.displaysdirectaustralia.com.au/application/third_party/ckfinder/userfiles/files/47823693867.pdfIn PDF document text
  • https://muzpony.de/obrazki/file/wutogowuriwuzaxubod.pdfIn PDF document text
  • https://cochleartudaskozpont.hu/files/ligejibejuxulen.pdfIn PDF document text
  • http://offokin.ru/sites/default/files/file/41037206020.pdfIn PDF document text
  • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/mrdrjocfhjns6mdn2lbhq9bc6u/sasozenegaputodanidiw.pdfIn PDF document text
  • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/eea8e9a3ef96da0398c5dfce3f25f807/71821858282.pdfIn PDF document text
  • http://scamps.biz/userfiles/file/poduvobugidig.pdfIn PDF document text
  • http://navigator-nsk.ru/userfiles/file/lifupejaxarosediwirinu.pdfIn PDF document text
  • https://pjkconstruction.ca/images/file/69175311450.pdfIn PDF document text
  • http://dalieuht.com/app/webroot/uploads/files/7050234930.pdfIn PDF document text
  • http://planbmedia.hu/files/xezutenudidatimalogakawa.pdfIn PDF document text
  • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615611ea4af33---88952957741.pdfIn PDF document text
  • http://thenext.pk/userfiles/files/37837420761.pdfIn PDF document text
  • https://mangonebike.com/uploads/file/63070641080.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.netReferenced by PDF JavaScript
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseReferenced by PDF JavaScript

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