Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 6e1529e27b184a61…

MALICIOUS

PDF / .VIR

433.7 KB Created: 2024-02-03 15:36:48 Authoring application: Karbon First seen: 2025-02-12
MD5: 6212e8fe81f1582e22e9d39ffe8980cf SHA-1: 357f488e60ee7fae015c3ac6c0f771d738b5642d SHA-256: 6e1529e27b184a613c43c37f295fc7e367d860af085633e88f6ff7caccb7637b
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a clickable link to an algorithmically-generated URL, identified as malicious by heuristics and ClamAV. This suggests the document is designed to redirect users to a potentially harmful website, likely for phishing or to download further malware. The presence of parser-evasion techniques further indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9055

Heuristics 6

  • 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.
  • 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.iddqd.ru/download?idclick=https://assets.website-files.com/65dca6142108eef8408d6378/66355bbae637ae2f3a1cb17b_75235177244.pdf&title=Lt.%20Typhon&where=mods&what=%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD+%EF%BF%BD%EF%BF%BD+ZDoom.org In PDF document text
    • https://www.rexart.com/cgi-rexart/al/affiliates.cgi?aid=872&redirect=https://www.paine.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://femaxunapunibin.sentineltr.com/f/23210077In PDF document text
    • http://www.guaguabj.com/link.php?url=https://assets.website-files.com/65f01ce51a8bde9564e79c40/663559de8cc0f8e7d5fdc683_judifunuxo.pdfIn PDF document text
    • http://ads.manyfile.com/myads/click.php?banner_id=198&banner_url=https://www.tpibillingsolutions.com/my_content/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://gebasunosapibif.salvaralbucardo.com/f/620488946In PDF document text
    • https://www.jwasser.com/?download=1&kcccount=https://nevinsfamily.org/admin/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://nebodereviw.mytickethomeband.com/f/24816In PDF document text
    • http://new.futuris-print.ru/bitrix/redirect.php?event1=click_to_call&event2=&event3=&goto=https://uploads-ssl.webflow.com/660047a64d84bb580daece86/66355b2150673ca6743acaad_tifumeziroriboviwasa.pdfIn PDF document text
    • https://feeds.nirankari.org/~/t/0/0/snmyoutube/~/https://uploads-ssl.webflow.com/65f01a5c10dcd76e5788e7b5/66355a5b456b1beeca69abfc_rawagutaligibuwi.pdfIn PDF document text
    • https://www.yallahunt.com/util/urlclick.aspx?obj=EMListing&id=4722&url=https://uploads-ssl.webflow.com/65effb28668f8b813e06faaf/66355adcd6bf9e6f64584bf0_59099475572.pdfIn PDF document text
    • https://domupn.ru/redirect.asp?BID=1737&url=https://nazarene-tours.com/wysiwyg/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://kejofaf.mytickethomeband.com/f/9368In PDF document text
    • https://www.atout-precocite.fr/spip.php?action=cookie&url=https://riverdellflowers.com/admin/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://tazudisuxirop.supremainmobiliaria.com/f/75383In PDF document text
    • https://wuvegowitumifu.colod.co.za/47104939082975786879666446?bugakediveguzavejinedobuvatileboraxu=wuwutodaponigewapimirudalanagajovixepowemipogabokigujesiragusoloditiwixibipenevixidogawaxitopijasowekapoxemumerofekimizaguradawowoxivizanajusunuvozesatejagaradebobeminibifabenujorinitazatodusosorafakuderijow&utm_kwd=rusk+hair+color+chart&leviselulupewepugasimemumikipefubupobomujusejosodopawasojapivuvarivarew=kawawaxufuperaxokezewaxenabunanozenisutewafixapobaweposixevugejozusobesalinafamolexukudorapiwinuwibopatusIn PDF document text
    • https://wuvegowitumifu.colod.co.za/47104939082975786879666446?bugakediveguzavejinedobuvatileboraxu=wuwutodaponigewapimirudalanagajovixepowemipogabokigujesiragusoloditiwixibipenevixidogawaxitopijasowekapoxemumerofekimizaguradawowoxivizanajusunuvozesatejagaradebobeminibifabenujorinitazatodusosorafakudPDF link annotation
    • https://wuvegowitumifu.colod.co.za/47104939082975786879666446?bugakediveguzavejinedobuvatileboraxu=wuwutodaponigewapimirudalanagajovixepowemipogabokigujesiragusoloditiwixibipenevixidogawaxitopijasowekapoxemumerofekimizaguradawowoxivizanajusunuvozesatejagaradebobeminibifabenujorinitazatodusosorafakuderijow&utm_kwd=rusk+hair+color+chart&leviselulupewepugasimemumikipefubupobomujusejosodopawasojapivuvarivarew=kawawaxufuperaxokezewaxenabunanozenisutewafixapobaweposixevugejozusobesalinafamolexukudorapPDF link annotation
    • https://varaghnama.blogsky.com/dailylink/?go=https://yue777.com/en/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://bodukenodirig.salvaralbucardo.com/f/74783&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_off00066d0b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00066d0b.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00066d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D0B 12236 bytes
SHA-256: f027df91bb06cef9686d0cb407d70877183f573a9b4339dece42f61c9cbe6a55
font_01_sfnt_off00068a2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A2A 17408 bytes
SHA-256: 87fd68356c73cfa3efb474ba317746ea5a9e1d21e7f34a472cee421b578c11ce