Malicious PDF / .VIR — malware analysis report

Heuristics 7

• 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.
• 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://lerusejosan.yenene.co.za/152844484632032405?doninuzevuzapuzimujetipoxavepexexusumotazoje=turexegipiralekaxoxigegowamurusipesesomediwemugadenojaseluvironenasoxemirovatotunizijazedogusonobizutofizilotokesuxokegijesojovagisufogunerenofukavodukefolosewusinogederinifodofewazusisujakaraxosizupuvexoneluza&keyword=correcting+grammar+worksheet+ks2&difudekenurawibelusinowanujilupabanafalukesinibuvazuxojepogunuxudagafanelaneliw=zabifuwaloxoturimanisunarividiwizazeburovipiwumafumimugovabawijamofalavinegijosofimumafukusisoxedimipiraxavimixafabukajunikeluzitikivokifijinevo In PDF document text

  • https://lerusejosan.yenene.co.za/152844484632032405?doninuzevuzapuzimujetipoxavepexexusumotazoje=turexegipiralekaxoxigegowamurusipesesomediwemugadenojaseluvironenasoxemirovatotunizijazedogusonobizutofizilotokesuxokegijesojovagisufogunerenofukavodukefolosewusinogederinifodofewazusisujakaraxosizupuvexPDF link annotation
  • https://lerusejosan.yenene.co.za/152844484632032405?doninuzevuzapuzimujetipoxavepexexusumotazoje=turexegipiralekaxoxigegowamurusipesesomediwemugadenojaseluvironenasoxemirovatotunizijazedogusonobizutofizilotokesuxokegijesojovagisufogunerenofukavodukefolosewusinogederinifodofewazusisujakaraxosizupuvexoneluza&keyword=correcting+grammar+worksheet+ks2&difudekenurawibelusinowanujilupabanafalukesinibuvazuxojepogunuxudagafanelaneliw=zabifuwaloxoturimanisunarividiwizazeburovipiwumafumimugovabawijamofalavPDF 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 extracted file (font_00_sfnt_off00039ae9.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00039ae9.bin)

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