Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 8680c65e75fcf0fe…

MALICIOUS

PDF / .VIR

214.9 KB Created: 2023-10-18 02:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 5.15.10) First seen: 2025-02-17
MD5: 95e3221c9899ca1a5f8b0dcce174e87e SHA-1: 5196102bd0f9a040ea12f0c8dc770584cb3919ab SHA-256: 8680c65e75fcf0fe95b0b971a081dadc5c5b05f6437b1be8f6e7c88025d7c7eb
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7465

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mogolofawe.xeltuve.com/454048667544172653?guzanivixaliditunuvurakasokudejunoxarotupunewajidutiduwotamoxatobunubuxatupudolajub=lerobixuvibufibubatanadabudedopagijanefowagolozirogutabaninatebefovatexutegemitegupagezamazititepiwopuvafifamupanigavemadarezowapigelaxagurufijavubamatiruvogirikunifurogunilenenumagazonisukazizeraxujajiz&utm_term=electrical+trade+theory+book+pdf&futonuzoxedepiropotivotikovolefifokunuxave=mivulepibozilesedutakejazosuxusirususodubogodikegadazexosixulazirediparojexotujunitakigiwafekebumifeputituviziwoputipowagas In PDF document text
    • https://mogolofawe.xeltuve.com/454048667544172653?guzanivixaliditunuvurakasokudejunoxarotupunewajidutiduwotamoxatobunubuxatupudolajub=lerobixuvibufibubatanadabudedopagijanefowagolozirogutabaninatebefovatexutegemitegupagezamazititepiwopuvafifamupanigavemadarezowapigelaxagurufijavubamatiruvogirikunifuPDF link annotation
    • https://mogolofawe.xeltuve.com/454048667544172653?guzanivixaliditunuvurakasokudejunoxarotupunewajidutiduwotamoxatobunubuxatupudolajub=lerobixuvibufibubatanadabudedopagijanefowagolozirogutabaninatebefovatexutegemitegupagezamazititepiwopuvafifamupanigavemadarezowapigelaxagurufijavubamatiruvogirikunifurogunilenenumagazonisukazizeraxujajiz&utm_term=electrical+trade+theory+book+pdf&futonuzoxedepiropotivotikovolefifokunuxave=mivulepibozilesedutakejazosuxusirususodubogodikegadazexosixulazirediparojexotPDF link annotation
    • https://uploads-ssl.webflow.com/64ee1c9ec0f2c702ff5c628e/652d19ab179180c77533638d_mekapufirub.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/bc2da57a-5cad-4b1e-b658-8efa7e30bee5/downloads/38893754569.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/7fc2a50f-1443-4887-8abd-520f7b9058ea/downloads/dasowub.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64f84703e20068093f38f12c/652d1a3ab52b8f95499227f5_34715908322.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64ee01bc4e77173a20f080ed/652d18acf0445417b54b9b77_waxinesevejuf.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/6ba0d34e-2cd2-4772-8d1b-6ac7012da877/downloads/gifoxidiguvedidol.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/4d4d12eb-d14e-411e-8b9e-ea7ab3da0557/downloads/8212878043.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/28854f03-49ad-47f2-b9f4-6188f1055399/downloads/2008_prius_smart_key_not_working.pdfIn 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_off00030b30.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00030b30.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00030b30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B30 16648 bytes
SHA-256: 5e3f1961cc4cbcfb970217f1684146c3d25fb7098b1d511eac8b6fed9ff0946b
font_01_sfnt_off0003364f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3364F 10768 bytes
SHA-256: 3cc36d684ee09a9c8033a51d150fa378d981a9ab3bfb03cde1d156614a727d03