Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 3e91dcea83ad9bf5…

MALICIOUS

PDF / .VIR

572.1 KB Created: 2023-11-10 02:59:54 +02:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 5.15.10) First seen: 2024-10-29
MD5: 5f64e3451851236dcad1c61553412cdc SHA-1: d3e80c45cca52bdcd371d11c11447575fe3c3b81 SHA-256: 3e91dcea83ad9bf590e6f7bd2776943fa92a0c56303ed7603bdf1b854a716a78
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6940

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://xifavan.lovali.co.za/656869295847312376?vaxogudibudopipadiwokerelenivubas=dosumemuzapaxiziluzirazokiduminuvakejojivasubivuvevunokarepivadarodojugatapetuneronemugadomoxaferitojimodelinavagufezosalapifusotamokalunimijopabasanufonunukavosivudomokafazetabixetobotomufusofikunikutijumarisi&utm_term=war+and+peace+book+reading+level&negewivuxeralosilapikunoduwejiwifexijosibox=wurevufimizamazekaxutovisotepumopepimenomisazezipitufibugobikejuvuvovuxokoxufitofozezexaxigaxulasixufefupusidesewadomosumokisumopolizomirenaf In PDF document text
    • https://xifavan.lovali.co.za/656869295847312376?vaxogudibudopipadiwokerelenivubas=dosumemuzapaxiziluzirazokiduminuvakejojivasubivuvevunokarepivadarodojugatapetuneronemugadomoxaferitojimodelinavagufezosalapifusotamokalunimijopabasanufonunukavosivudomokafazetabixetobotomufusofikunikutijumarisi&utm_terPDF link annotation
    • https://xifavan.lovali.co.za/656869295847312376?vaxogudibudopipadiwokerelenivubas=dosumemuzapaxiziluzirazokiduminuvakejojivasubivuvevunokarepivadarodojugatapetuneronemugadomoxaferitojimodelinavagufezosalapifusotamokalunimijopabasanufonunukavosivudomokafazetabixetobotomufusofikunikutijumarisi&utm_term=war+and+peace+book+reading+level&negewivuxeralosilapikunoduwejiwifexijosibox=wurevufimizamazekaxutovisotepumopepimenomisazezipitufibugobikejuvuvovuxokoxufitofozezexaxigaxulasixufefupusidesewadomosumPDF link annotation
    • http://wenq.org/In extracted file (font_00_sfnt_off00089112.bin)
    • https://img1.wsimg.com/blobby/go/fd99eea2-b452-408e-9650-8ee713f79585/downloads/is_fnaf_pizzeria_simulator_on_steam.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/2b383d2d-2b5a-4b4f-949f-124c21f71183/downloads/20988326003.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64f8473d7f48cd76b05e3111/6542e236a435303f58da618d_xegimozomilinuwig.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/fd99eea2-b452-408e-9650-8ee713f79585/downloads/86815069270.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/0e54dd42-7fde-4c92-bbea-1ed028bba653/downloads/butetidid.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/798dafca-a139-4fa1-9cdc-ddaf31d0afe1/downloads/how_much_is_a_drivers_license_renewal_in_texas.pdfIn PDF document text
    • https://irp-cdn.multiscreensite.com/d8c375b4/files/uploaded/88531309443.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/2b383d2d-2b5a-4b4f-949f-124c21f71183/downloads/kuletarafigogokaj.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/1b7838bc-64de-4652-94b1-8a636606f2da/downloads/gulus.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://nmr.mgh.harvard.edu/~fangq/In extracted file (font_00_sfnt_off00089112.bin)
    • http://www.gnu.org/copyleft/gpl.htmlIn extracted file (font_00_sfnt_off00089112.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_01_sfnt_off00089bdb.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_01_sfnt_off00089bdb.bin)
🗂 Part of campaign: wenq.org 13 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00089112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89112 3276 bytes
SHA-256: c08f8b4ebf7898a5ff04611ef7ef8c1723f4884676e0eebbd5335f0f733fd8a0
font_01_sfnt_off00089bdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89BDB 17620 bytes
SHA-256: 181b37c238c874a3c0ecc15dfc5cfc23c47cc0343914df7fe4a5d70e8a6578da
font_02_sfnt_off0008c913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C913 10704 bytes
SHA-256: bb4c33879799a3882eb74fec841cda59e934019a7f3fdb796415ccd5521e8caf