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
• Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
  Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://krisoc.ru/uplcv?utm_term=how+to+change+maintenance+kit+on+hp+laserjet+600+m601.
• 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+change+maintenance+kit+on+hp+laserjet+600+m601 PDF link annotation

  • https://www.hkha.org/ckfinder/userfiles/files/6273383789.pdfIn PDF document text
  • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f67c20b0b0---sadux.pdfIn PDF document text
  • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607050a678b96---44330243087.pdfIn PDF document text
  • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/e424df47559339afec34d6f4dfd3931a/53583090289.pdfIn PDF document text
  • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/j75ms0d5c91sae2iecad34n07n/90655978887.pdfIn PDF document text
  • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/95f8d820a8139a184fdadaf14338e185/42275703503.pdfIn PDF document text
  • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac941b1d74---fubodapupumalenezulukol.pdfIn PDF document text
  • http://mulherinscampground.com/clients/879992/File/fufomusepoxane.pdfIn PDF document text
  • http://nemdanangpho.com/uploads/2021-06-20/images/files/82738291297.pdfIn PDF document text
  • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/bt899h33pv5n6q70klkpocbk2h/wawiva.pdfIn PDF document text
  • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/787e31f4da520792ee7bc1cceccc416e/viloj.pdfIn PDF document text
  • http://szwygs.com/upload/xafer.pdfIn PDF document text
  • http://ridgefieldpark1967.com/clients/3/39/39eebdc8797e30ee23d4fd57d071fd44/File/jopuleziputibafibenatobu.pdfIn PDF document text
  • http://e-kva.ru/admin/ckfinder/userfiles/files/janeluvak.pdfIn PDF document text
  • https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/fcf3a7beb0cfa5cb7388d46af4016dcd/63047105809.pdfIn PDF document text
  • http://veterinariomauracotti.it/userfiles/files/26795729175.pdfIn PDF document text
  • https://walkandsmile.com/userfiles/file/66813806222.pdfIn PDF document text
  • https://www.tunnel.de/files/uploaded/file/32646697650.pdfIn PDF document text
  • http://fcvperu.org/data/fcvperu/userfiles/file/15418083577.pdfIn PDF document text
  • http://villa-carlshorst.de/sites/default/files/file/51965518959.pdfIn PDF document text
  • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/lma295l7t2kej59vn3mcb47f62/lopawosusuxopojuj.pdfIn PDF document text
  • http://penzionriverside.cz/files/file/rerunawidilakazi.pdfIn PDF document text
  • http://hzqzg.com/d/files/raxexusobodoxubijudefu.pdfIn PDF document text
  • http://fornacedelia.it/userfiles/files/ninatemojiwowukek.pdfIn PDF document text
  • http://www.pvvc.cz/files/xipofaxasu.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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