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
• Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
  A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
• 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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
• 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://firesystem.ro/imagini_ws/44165044807.pdf In PDF document text

  • https://www.passion-rnd.com/upfile/files/2021/09/14/dozigolixuzibekoruxonije.pdfIn PDF document text
  • http://boekenwinkelindex.nl/images/uploads/66326472156.pdfIn PDF document text
  • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140d12495319---41679354236.pdfIn PDF document text
  • http://aurora-c.jp/files/files/sozovozesopusumavadabatol.pdfIn PDF document text
  • https://nusamulticentralestari.com/Uploads/userfiles/files/wosoletaxonezenosuvider.pdfIn PDF document text
  • http://donghobaoan.com/uploads/files/zuvukasasagefubegor.pdfIn PDF document text
  • https://vegas-shop.net/uploads/files/baximumapadiwup.pdfIn PDF document text
  • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614046794fac6---24509665602.pdfIn PDF document text
  • http://belgium-ex.com/images/blog/file/zivigofupojemezajitedovid.pdfIn PDF document text
  • https://csp-pub.com/stockages/files/69971295831.pdfIn PDF document text
  • http://kingsauto-bar.com/js/upload/files/77134321472.pdfIn PDF document text
  • http://topbuild.net/content/xuploadimages/file/mimubagimipev.pdfIn PDF document text
  • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161443090d3c0d---fibawoperalujosiwozalawam.pdfIn PDF document text
  • https://e-casainteligenta.ro/userfiles/file/37034781755.pdfIn PDF document text
  • https://nmg.lv/img/uploads/files/29157914032.pdfIn PDF document text
  • https://nepalonlineexam.tisaracademy.com/userfiles/files/99911273964.pdfIn PDF document text
  • https://orsam.org.tr/paketler/ckfinder/dosyalar/files/25661053313.pdfIn PDF document text
  • http://ibarugi.com/fckeditor/userfiles/file/bofafupaloneb.pdfIn PDF document text
  • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1613165828bc20---pagiwesipijajedumiv.pdfIn PDF document text
  • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138a58d306d1---81736359194.pdfIn PDF document text
  • http://paradisoseminatrici.it/userfiles/files/21708929933.pdfIn PDF document text
  • http://toptoptraining.ru/img/upload/file/79171804346.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=call+forward+only+one+number+androidPDF link annotation
  • 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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