Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 30443d90cf8e3060…

MALICIOUS

PDF / .VIR

94.1 KB Created: 2023-10-21 19:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2024-07-29
MD5: 22a00f5136a1b3672c9d8d86687a3740 SHA-1: 65761d13514672a103e4d2fa217c783744e9f286 SHA-256: 30443d90cf8e3060493a3689ef337040cb38f07b432f6b5086e1b0fa14ebc440
186 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0921

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 https://newafikazabimi.xeltuve.com/8502130990976237528780232?rulorijemugilugasavimov=nexisagoweredaxuzozabiwevutogidanipomunumenukawulidilipubazotanaranurowususetezoxananiwasagenasovamekezogefifexelamelarugurulugagomobusuboxisowoxonolanirududafotuwafalodudebubevazegovopomenovejefazazewav&keyword=galaxy+book+3+pro+360+5g&lilefipofumemerowawegetijajezabaxojikosozawupuweridudolirokomevorerazukubevurulob=solobubotufiwogogozebuxowakuzedulemukubumojonowovajofovesibagelumajaxexedapalevinagurefixebutozuloduninajowepejineliwumaleturotinela In PDF document text
    • https://newafikazabimi.xeltuve.com/8502130990976237528780232?rulorijemugilugasavimov=nexisagoweredaxuzozabiwevutogidanipomunumenukawulidilipubazotanaranurowususetezoxananiwasagenasovamekezogefifexelamelarugurulugagomobusuboxisowoxonolanirududafotuwafalodudebubevazegovopomenovejefazazewav&keyword=galPDF link annotation
    • https://newafikazabimi.xeltuve.com/8502130990976237528780232?rulorijemugilugasavimov=nexisagoweredaxuzozabiwevutogidanipomunumenukawulidilipubazotanaranurowususetezoxananiwasagenasovamekezogefifexelamelarugurulugagomobusuboxisowoxonolanirududafotuwafalodudebubevazegovopomenovejefazazewav&keyword=galaxy+book+3+pro+360+5g&lilefipofumemerowawegetijajezabaxojikosozawupuweridudolirokomevorerazukubevurulob=solobubotufiwogogozebuxowakuzedulemukubumojonowovajofovesibagelumajaxexedapalevinagurefixebutozuPDF 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_off00013096.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00013096.bin)
🗂 Part of campaign: shared payload a02f67deb0 41 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13096 17048 bytes
SHA-256: f23a70be4359e2ecd44f1a827095bffe47ebac02750e03e3ed603d2a2cfcfba0
font_01_sfnt_off00015af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AF7 8940 bytes
SHA-256: a02f67deb084b7ce8e02d7004994a9dd7e3132fe24919a42c6f0df6ed367c188