Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 e8e32e93f7598587…

MALICIOUS

PDF / .VIR

251.3 KB Created: 2024-04-28 13:01:29 Authoring application: SWFTools First seen: 2024-06-13
MD5: 9cea41206c41510dd7f97ef62cb74985 SHA-1: a993f805f7eb76595ff9736097d6fa3a5bb7f073 SHA-256: e8e32e93f7598587f6dd0d4efc28f1c6fbee5a4220fb65774b227f11269f9475
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7342

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.
  • 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.
  • 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.cheapaftershaves.co.uk/go.php?url=https://uploads-ssl.webflow.com/65f041a4aeef5b01909da746/662d8a78ed4686004d4195fc_zomivozefupevaziw.pdf In PDF document text
    • http://ilts.ru/bitrix/redirect.php?event1=catalog_out&event2=/upload/iblock/123/123c85fde398aaf5e070005f5ec03091.pdf&event3=da98214a57c1cfbe76b6dabdee2edd12.pdf&goto=https://cctsiapps.ucdenver.edu/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://sawugakaju.manabi-subete.com/f/87082299In PDF document text
    • https://schnitzerund.de/https://theater.ucsc.edu/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://wabixuwulivoj.sentineltr.com/f/3441In PDF document text
    • https://smart-hifi.at/https://assets.website-files.com/65e882c4947bd86b0fe4d5e5/662d89dc4c7feef090b89573_rufixolujujuduxarasowe.pdfIn PDF document text
    • https://www.guiatangaradaserra.com.br/acesso_banner.php?tipo=2&id_banner=26&link_banner=https://giracigana.com/js/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://mufurujitemif.ibcphoenix.com/f/98198In PDF document text
    • https://www.kyslinger.info/0/go.php?url=https://grail.stanford.edu/sites/all/modules/fckeditor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://karakurino.gfxtoolkit.com/f/66551In PDF document text
    • https://fexuvoni.xenina.co.za/32570484620003469691175184?xemomodubidepitepojosopalagutesaxukevetewizajofuwulatifajiwuvilam=zojumudewemezolepukimotamiwipudirozewobekidadanojadejejokuradalukevubipufarafebokobuxaterewubafujisezenemolitipigewoloririkusuwedegiliguwidovisoxepugexizumufafidotasapitewakolidisusebegunisofuparijikozexikiv&keyword=september+coloring+pages+printable&bepabonovefakodigezuvazikazofesopexugekemaxujafekekawadinimidagirugo=vudolisiwodefajipejigefasofipuxozewabomovubujitubiwagopoziwaxenejufedewajezubatusanorafanisakarelerumotorabIn PDF document text
    • https://tsumanshpon.com/uk-UA/Home/SetCulture?returnUrl=https://lum-prod.ec.gavilan.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://sivarigobefuk.manabi-subete.com/f/59591487In PDF document text
    • https://fexuvoni.xenina.co.za/32570484620003469691175184?xemomodubidepitepojosopalagutesaxukevetewizajofuwulatifajiwuvilam=zojumudewemezolepukimotamiwipudirozewobekidadanojadejejokuradalukevubipufarafebokobuxaterewubafujisezenemolitipigewoloririkusuwedegiliguwidovisoxepugexizumufafidotasapitewakolidPDF link annotation
    • https://fexuvoni.xenina.co.za/32570484620003469691175184?xemomodubidepitepojosopalagutesaxukevetewizajofuwulatifajiwuvilam=zojumudewemezolepukimotamiwipudirozewobekidadanojadejejokuradalukevubipufarafebokobuxaterewubafujisezenemolitipigewoloririkusuwedegiliguwidovisoxepugexizumufafidotasapitewakolidisusebegunisofuparijikozexikiv&keyword=september+coloring+pages+printable&bepabonovefakodigezuvazikazofesopexugekemaxujafekekawadinimidagirugo=vudolisiwodefajipejigefasofipuxozewabomovubujitubiwagopozPDF link annotation
    • https://ardakani.blogsky.com/dailylink/?go=https://assets.website-files.com/660036d82bf4dc146625b6e7/662d7ff688062fffaf216276_wexuvupitewelawiz.pdf&id=4In 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_off00039ca1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00039ca1.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00039ca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39CA1 15228 bytes
SHA-256: 0163ba243ee5ecea117219779408b64fbfd248c55d806c51f8033ea73fdf34e0
font_01_sfnt_off0003c385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C385 11816 bytes
SHA-256: d24097d16058cb77c2c2a1d98c7578b47e1b05019d2f11d5898b24c2cd2bca9f