Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 e5a8040c197eb322…

MALICIOUS

PDF / .VIR

135.4 KB Created: 2024-02-03 02:47:09 Authoring application: PDF Studio First seen: 2024-07-06
MD5: ae2470d263e8fa3806ad93ad7436c24c SHA-1: c1e07c82e607d513da19da84d66d5126db2c2a5a SHA-256: e5a8040c197eb32222973434ea301fb3a8d03c40dd64439926ce634208aa4c7e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4309

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
  • 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 http://www.jets.dk/aviation/link.asp?url=https://ronitlevyweiss.com/sites/all/modules/fckeditor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://xiwow.supremainmobiliaria.com/f/79914087&id=1973 In PDF document text
    • https://www.stepupbuzz.club/st-manager/click/track?id=9534&type=raw&url=https://rc-support-recruit.com/js/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://tugegitewuboba.sentineltr.com/f/77238In PDF document text
    • http://a-kaunt.com/bitrix/rk.php?id=17&site_id=s1&event1=banner&event2=click&goto=https://heavenlyvines.com/js/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://peketukamo.sharynideas.com/f/89052In PDF document text
    • https://monarchbeachmembers.play18.com/ViewSwitcher/SwitchView?mobile=False&returnUrl=https://baohohoanglong.com/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://pudujizefis.skyangelus.com/f/91188In PDF document text
    • https://gejawor.xenina.co.za/93471901163795611293214530?kuzanakejeniraweduvevobanaxutunovawonesonevujukaxenelakijuzebuvujagivaxemeguxiwisenusapuwuzesitoje=zilopekafonanomitafukifizijorakupivanudadepopedebigotomegofofufukiwubugupuzomoforirakeludopolujisunajotosepaxiveteretifuzuvirinajizosunufonumarupunabikewozikipujekusubedunumufalukomovumonawowosetuzupu&keyword=congruent+triangles+coloring+activity+dinosaur+answer+key+pdf&jujedimadapubidatudozuwibunituripopalaxububilolitesifaduwixugojasugudutivalepex=kelafinigefexupabejigusegurukabeluvubakefavokomidovabulolavezosuzutuxavixexazetejojeluzevuburozidorejizateluxesaliwokIn PDF document text
    • https://gejawor.xenina.co.za/93471901163795611293214530?kuzanakejeniraweduvevobanaxutunovawonesonevujukaxenelakijuzebuvujagivaxemeguxiwisenusapuwuzesitoje=zilopekafonanomitafukifizijorakupivanudadepopedebigotomegofofufukiwubugupuzomoforirakeludopolujisunajotosepaxiveteretifuzuvirinajizosunufonumarupPDF link annotation
    • https://gejawor.xenina.co.za/93471901163795611293214530?kuzanakejeniraweduvevobanaxutunovawonesonevujukaxenelakijuzebuvujagivaxemeguxiwisenusapuwuzesitoje=zilopekafonanomitafukifizijorakupivanudadepopedebigotomegofofufukiwubugupuzomoforirakeludopolujisunajotosepaxiveteretifuzuvirinajizosunufonumarupunabikewozikipujekusubedunumufalukomovumonawowosetuzupu&keyword=congruent+triangles+coloring+activity+dinosaur+answer+key+pdf&jujedimadapubidatudozuwibunituripopalaxububilolitesifaduwixugojasugudutivaPDF 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_off0001c9d3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001c9d3.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001c9d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C9D3 16712 bytes
SHA-256: 32ab15d16188d882cd5829b6bf9fb706ce191f7be492b2f01fc02c69c1d04058
font_01_sfnt_off0001f55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F55D 11556 bytes
SHA-256: 840af7585989d26b6cf4770388b7c836d0eb40d3b0c84ecbb03a0f7adf8a3cd3