Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 c508ef6323df4d2d…

MALICIOUS

PDF / .VIR

409.7 KB Created: 2024-01-02 10:09:59 Authoring application: GIMP First seen: 2024-07-06
MD5: 941ffdca09c0b62cdfef90821c2d4b42 SHA-1: f8e0f894117d896947f26955912c64a2ddd0cd8c SHA-256: c508ef6323df4d2d664634787fae334d45e6df2c8f746b9902056f4522777ebb
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9780

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://yclibraryfriends.org/links.cgi?url=https://klha.net/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://simim.sharynideas.com/f/892763638&marketplaceID=ATVPDKIKX0DER&qid=1702308902&s=merchant-items&sr=1-4&title=Guitar%20Pickers%20Fakebook:%20The%20Ultimate%20Sourcebook%20for%20the%20Traditional%20Guitar%20Player,%20Contains%20over%20250%20Jigs,%20Reels,%20Rags,%20H In PDF document text
    • https://thewhiskeycompanion.com/login/api/redirectPage.php?area=retail&url=https://njedcsolar.com/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://bebabukafeb.manabi-subete.com/f/39746In PDF document text
    • https://shemale-porn-video.com/cgi-bin/out.cgi?id=103&l=Txt&u=https://www.steu.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://zoteze.sentineltr.com/f/233096062In PDF document text
    • http://arskland.ru/bitrix/redirect.php?goto=https://racereplays.com/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://ruveforaxutu.sharynideas.com/f/33913839In PDF document text
    • http://www.sports.org.tw/c/news_add.asp?news_no=5411&htm=https://nationaltitlegroupapp.com/includes/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://betep.thiranmanamalai.com/f/67214521&no=10309In PDF document text
    • http://meridian-dv.ru/bitrix/click.php?anything=here&goto=https://ravenswingbnbelymn.com/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://gumanu.theplazahotelbalanga.com/f/60456In PDF document text
    • https://www.wuppertal-aktuell.com/itrium/ad.php?b=Wuppertal%20aktiv&k=kleinanzeige&u=https://osteopatas.org/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://sawaze.salvaralbucardo.com/f/74850In PDF document text
    • http://www.diwaxx.ru/win/redir.php?redir=https://faqs.sinclair.edu/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://jimovaxawuwitop.palsaikbbq.com/f/73213415In PDF document text
    • https://remont-shini.ru/go.php?url=https://khalsasarbatsewa.com/includes/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://bululimilujas.theplazahotelbalanga.com/f/67928651In PDF document text
    • http://www.blackpornfans.com/cgi-bin/at3/out.cgi?id=89&tag=toptop&trade=https://www.raum4you.ch/CFIDE/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://muzog.palsaikbbq.com/f/72905In PDF document text
    • https://duzoxadasid.yenene.co.za/9904106625635921554642186?janumewunibevovevulatotimawazanadunera=javejozujowawixefilizarigofusuxojuwifiwijusetukabogowitekozewodojamifojidanixisabikavanofigewewofusegepiwijerowavikumafavulekivabimukulurosutepolibawarodajumedanobemowupaxepaxonepudafonaluxisazivifepupufigipeza&utm_term=hankison+air+dryer+manual+pdf&luraxuzirebezufazirizudezeligazukapigexivebiwonibedurezosejupunigafiz=gulugovumorojedopilaludikopililijamirefajitokegijovusatebavevefekipifuwesotelodosenexukafezuvovesekezugozowilivexenerepijegonawesuputasaxixuvinuwuwenIn PDF document text
    • http://edukids.hk/special/emailalert/goURL.jsp?clickURL=https://my.lcc.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://jebewuro.mytickethomeband.com/f/97446673In PDF document text
    • https://duzoxadasid.yenene.co.za/9904106625635921554642186?janumewunibevovevulatotimawazanadunera=javejozujowawixefilizarigofusuxojuwifiwijusetukabogowitekozewodojamifojidanixisabikavanofigewewofusegepiwijerowavikumafavulekivabimukulurosutepolibawarodajumedanobemowupaxepaxonepudafonaluxisazivifepupuPDF link annotation
    • https://duzoxadasid.yenene.co.za/9904106625635921554642186?janumewunibevovevulatotimawazanadunera=javejozujowawixefilizarigofusuxojuwifiwijusetukabogowitekozewodojamifojidanixisabikavanofigewewofusegepiwijerowavikumafavulekivabimukulurosutepolibawarodajumedanobemowupaxepaxonepudafonaluxisazivifepupufigipeza&utm_term=hankison+air+dryer+manual+pdf&luraxuzirebezufazirizudezeligazukapigexivebiwonibedurezosejupunigafiz=gulugovumorojedopilaludikopililijamirefajitokegijovusatebavevefekipifuwesotelodosePDF link annotation
    • http://www.gals4free.net/cgi-bin/atx/out.cgi?id=148&tag=top02&trade=https://cctsiapps.ucdenver.edu/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://ridozoforuga.skyangelus.com/f/37183In PDF document text
    • https://account.cosmote.gr/o/login-service/fixed/logout?redirect_uri=https://atamergranit.com/admin/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://daxonapuvew.skyangelus.com/f/47893In 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_off00060e0d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00060e0d.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00060e0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E0D 17448 bytes
SHA-256: eaf43283b0f28136d570f2f4fb5e11f96ad99358e068e83e8a4f04e747d470ac
font_01_sfnt_off00063c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C36 11368 bytes
SHA-256: 004babd97e5dfd9d447b802e9a43b87e8b7f43b9a850b4a13585da5a2b202185