Malicious PDF / .VIR — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
  PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 71 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• Image-only PDF lure with a single link to a non-reputable host medium PDF_IMAGE_LURE_NONREPUTABLE_LINK
  PDF is image-heavy with little real text and its only clickable action is a single external link to a host that is not known-good. This is the canonical malspam carrier shape — a screenshot-like 'click to view' page whose sole purpose is to funnel the victim to one redirect/landing URL on a compromised or throwaway domain. Flagged suspicious rather than malicious because the link alone (no shortener / typosquat / brand path) is the only corroborator beyond the image lure.
• 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 http://www.orderinn.com/outbound.aspx?url=https://assets.website-files.com/65f01d9254531d460443a7d2/663248955fc6e11e0c5d8005_17334038159.pdf In PDF document text

  • http://www.11-kanal.ru/engine/ajax/go.php?go=https://uploads-ssl.webflow.com/65ffdc71120ce9183091d209/6632469ec5f3c2412e27e105_29938499796.pdfIn PDF document text
  • https://gefidapafowume.lovig.co.za/82510818016761669701060737?womupatevadonapubepokatasesusurijemibowojukikuzagenozotoxomigadidusumusobiruv=wotixejapuxovufobezajawojavibivavujevolegibezuwaxetelegoboriwilukisikoriguvisozelefudovowogaxisarenarimusugurukasavidapifobiwimudukesukenekutazujowatuvapisimenuguwalumusebukuzomiwumixugosubapapisimupuz&utm_term=text+features+worksheet+4th+grade+pdf&nezozazadazupedupemazatusasapajabi=saxenumapisitajivumipubizobuvebumofetovipezuzafewawedumenipazulujiritidixutomofibifaroxaderelugefuwowefosenuriziwoIn PDF document text
  • https://gefidapafowume.lovig.co.za/82510818016761669701060737?womupatevadonapubepokatasesusurijemibowojukikuzagenozotoxomigadidusumusobiruv=wotixejapuxovufobezajawojavibivavujevolegibezuwaxetelegoboriwilukisikoriguvisozelefudovowogaxisarenarimusugurukasavidapifobiwimudukesukenekutazujowatuvapisimenuIn PDF document text
  • https://gefidapafowume.lovig.co.za/82510818016761669701060737?womupatevadonapubepokatasesusurijemibowojukikuzagenozotoxomigadidusumusobiruv=wotixejapuxovufobezajawojavibivavujevolegibezuwaxetelegoboriwilukisikoriguvisozelefudovowogaxisarenarimusugurukasavidapifobiwimudukesukenekutazujowatuvapisimenuguwalumusebukuzomiwumixugosubapapisimupuz&utm_term=text+features+worksheet+4th+grade+pdf&nezozazadazupedupemazatusasapajabi=saxenumapisitajivumipubizobuvebumofetovipezuzafewawedumenipazulujiritidixutoIn 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 extracted file (font_00_sfnt_off0000d637.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d637.bin)

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