Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 cfa3b161ba097e7c…

MALICIOUS

PDF / .VIR

487.0 KB Created: 2024-01-19 09:35:18 Authoring application: Nitro PDF First seen: 2024-06-15
MD5: a90894ccb3c82d2e8a4ac54ee586de96 SHA-1: d4b397850897be28a09be2de8f914a3f3383846c SHA-256: cfa3b161ba097e7c28052890c5e69473d261de7bec701552cebd1eb85489604f
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8750

Heuristics 6

  • 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.
  • 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://jirikafefu.oalroax.com/88955783470315331366746480?jatadesimulenuzinosow=derojarupozemuvominarafogezoxerenuzamomuritipapukozozavivubafanavubazusumonuxebowijoditikobomiraparisaxelimakapidoxesupusimoxazofixamupunoramolefafaratavawanejumadotexedavapozebaguzegokovedigevubelifuvezozoxo&utm_kwd=battery+voltage+car+chart&deporawibimejaxupopapepodadasawasewopazipenebimunavizemumibavafolor=busawibufilafudiwedazoxepulusatowazuniluzadufezopamejozovafigirobadulotuwowavufozadumuxuzabuwixunesoxo PDF link annotation
    • http://rcoi71.ru/bitrix/redirect.php?goto=https://uploads-ssl.webflow.com/65f001bf616dbf0a1682d1e5/65f60f0ebc8814eb48ec8071_23115388624.pdfIn PDF document text
    • https://milfhdporn.net/xxx.php?link=video-bookmark&skip_sell=true&url=https://assets.website-files.com/65dca6142108eef8408d6378/65f602d46c7db01c71b102c8_40907967861.pdfIn PDF document text
    • https://www.jml.pub/intro/article_detail/preview?id=574&pdf=https://uploads-ssl.webflow.com/65f02a0d6da2e3540e2e3986/65f6027bb55bafaaa9aab102_97508050912.pdfIn PDF document text
    • https://www.agronomia.cl/track.asp?link=https://assets.website-files.com/65e877b4bd1c48c48fcb93ae/65f60ddbc27e3ef6bd79a422_31521581325.pdfIn PDF document text
    • http://smokinghotredhead.wildrose.net/cgi-bin/friends/out.cgi?id=english&url=https://uploads-ssl.webflow.com/65f03f86eca8d8d1ed03b52c/65f605faa056acdf91f29e85_nagafagaliji.pdfIn PDF document text
    • http://w.kentuckyheadhunters.net/gbook/go.php?url=https://assets.website-files.com/65f00cdcdc3019b69f20f721/65f6037dfb31bfc79e8dfbf9_tenuguroxulomomufedanawas.pdfIn PDF document text
    • http://webdir.sangeet-bhuvan.com/go_to_website.php?url=https://assets.website-files.com/65dc919c2f219b1429c9731e/65f603286c7db01c71b14d55_wukuwiba.pdfIn PDF document text
    • http://notawoman.com/cgi-bin/atx/out.cgi?id=44&tag=toplist&trade=https://uploads-ssl.webflow.com/65f001bf616dbf0a1682d1e5/65f60d83dcbc7d17db7721be_11993351122.pdfIn PDF document text
    • https://www.digitalabiblioteka.lv/?id=oai:the.european.library.DOM:50465&redirect=https://assets.website-files.com/65e887b9f441af938abb542b/65f60c55f9ed005fb31df32a_tenivomadazunazozofobisip.pdfIn PDF document text
    • https://www.truthchat.site/go/?to=https://uploads-ssl.webflow.com/65f008022f6065a7d8be44e6/65f6054db76fe4658a6f5923_zusonanexemavazixokidifo.pdfIn PDF document text
    • http://dzdj.cn/UpdatePushInfo.aspx?adid=5&ReturnUrl=https://futterkorb-bremen.de/wp-content/uploads/2024/01/robabamu.pdfIn PDF document text
    • https://jirikafefu.oalroax.com/88955783470315331366746480?jatadesimulenuzinosow=derojarupozemuvominarafogezoxerenuzamomuritipapukozozavivubafanavubazusumonuxebowijoditikobomiraparisaxelimakapidoxesupusimoxazofixamupunoramolefafaratavawanejumadotexedavapozebaguzegokovedigevubelifuvezozoxo&utm_kwd=batPDF link annotation
    • https://ghorbanalisheiassi.blogsky.com/dailylink/?go=https://oryosirm.online/wp-content/uploads/2024/02/lodogekubibobulam.pdf&id=3In 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_off00074647.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00074647.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00074647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74647 15932 bytes
SHA-256: cf854ff8aa2ce68318ebd3e1e362f3a40185d86a9763ebd6115a5c40c2d0c594
font_01_sfnt_off00076f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76F79 12232 bytes
SHA-256: 78e3dd4e1b01d9a55d8fac6df564ba36c99aee86fd0add563c31a953a9234515