Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 31e986e1015141e0…

MALICIOUS

PDF / .VIR

271.3 KB Created: 2023-11-12 10:30:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2024-10-24
MD5: bec399dde7579b4a6f4964cb19acd15e SHA-1: 7d753bce25fe42d89f159f1510ccf33ba9b966bb SHA-256: 31e986e1015141e0c06e7cdab7d7d0e4764b7d4fc8a6c068021cc3e5374668e1
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6959

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 https://aristotle-s-metaphysics-book-1-summary.globalpharmatimes.com/vajujidofosejuduxafize.pdf In PDF document text
    • https://1998-chevy-cavalier-manual-transmission-removal.biaremodelor.org/3182365654.pdfIn PDF document text
    • https://kuta-software-infinite-geometry-answers.mackayscm.com/duvikanezukomukir.pdfIn PDF document text
    • https://rekaligef.ydeepty.com/94788194339383935410753117?xogokejibugizitakajez=pizixawajasudigixijetebinosonegabefajarafiregokexufezazugapurugimakomosafesipixijivakazomorigiliriwoxawexuzenalefakikexinisibemibelukusuzijunamininarivakibitokarigupixukimituzitiwojemeseluduxivurodasuwonitume&utm_kwd=naciones+unidas+para+preescolar&fefefojunimoligatesevasobofobosifavawamizizanivufofadezidatuxavelomipokusegasuzevumiwutiwole=manefexomareroxipojatufolivenuxidikavatotutavudadakaxunekevuboxizubuvikakoregubivibejenowededifemabuposebidezapusoxuxezukifeluvagirisilepaboziwominoIn PDF document text
    • https://rekaligef.ydeepty.com/94788194339383935410753117?xogokejibugizitakajez=pizixawajasudigixijetebinosonegabefajarafiregokexufezazugapurugimakomosafesipixijivakazomorigiliriwoxawexuzenalefakikexinisibemibelukusuzijunamininarivakibitokarigupixukimituzitiwojemeseluduxivurodasuwonitume&utm_kwd=naciPDF link annotation
    • https://rekaligef.ydeepty.com/94788194339383935410753117?xogokejibugizitakajez=pizixawajasudigixijetebinosonegabefajarafiregokexufezazugapurugimakomosafesipixijivakazomorigiliriwoxawexuzenalefakikexinisibemibelukusuzijunamininarivakibitokarigupixukimituzitiwojemeseluduxivurodasuwonitume&utm_kwd=naciones+unidas+para+preescolar&fefefojunimoligatesevasobofobosifavawamizizanivufofadezidatuxavelomipokusegasuzevumiwutiwole=manefexomareroxipojatufolivenuxidikavatotutavudadakaxunekevuboxizubuvikakoregubPDF link annotation
    • https://img1.wsimg.com/blobby/go/7aa7eca6-d2aa-4dca-9f53-83e987950ac7/downloads/goethe_books_list.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64f03c4cbcc8e4125ccb2aa2/654e6e07d97ba55afe1eb319_92502976301.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/76f23563-9eb4-43ca-b17e-43ee5eec81c4/downloads/soil_and_water_conservation_merit_badge_requirements.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_off0003edc2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003edc2.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003edc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3EDC2 10484 bytes
SHA-256: 074e58d57c86e162a6263d6cdf951dd61f3d6139506e50f5f71b4f9df27e5e18
font_01_sfnt_off000405a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x405A7 17176 bytes
SHA-256: 1932408619bbd56911005e740e3f6df9df764132e0d5a21aedaf39a3ff46ebbc