Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 ef52f71dec1c0458…

MALICIOUS

PDF / .VIR

383.3 KB Created: 2023-11-08 15:58:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2024-10-26
MD5: 56a949a6c39517e85ab17f89afb21faf SHA-1: 749278da8e3dc91a451cdd82a3c3bacd03a64799 SHA-256: ef52f71dec1c045898f9d83ddb5113f75a09be4721f79c708b6bff39d84564d9
106 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://grey-livre-audio-complet-gratuit.era-insurance.com/45090746157.pdf In PDF document text
    • https://honda-ridgeline-2023-manual.classiccountry1390.com/mibomoremeximunineji.pdfIn PDF document text
    • https://ecosystems-of-the-world-book.yaguecf.com/podebarubebisod.pdfIn PDF document text
    • https://sejes.gluvoob.com/68027116917326233918600627?soxozonugexasusajobekiwirexijizadamumematunom=wutekaperidegodunigejidumowidesamukavumamomuxibimodunibenoxiwogukudirofezevoponevozivididuxeparikopazagifutanesonajanimapeluxitikeremidejuvenujeginuwodesunuwukodaxugojutemulogutanitizalewafisomebonikixadexesu&keyword=el+camino+del+artista+julia+cameron&bowinesidufanoloforaxobiteripawawofupaf=fedavuximileperugujawixozisogarutekupozosusagigatotitasudenofubokitigexujibexuvafaketikezuzegakunazolinonularimogosununizikeruxaguwiwisularoxatinibIn PDF document text
    • https://sejes.gluvoob.com/68027116917326233918600627?soxozonugexasusajobekiwirexijizadamumematunom=wutekaperidegodunigejidumowidesamukavumamomuxibimodunibenoxiwogukudirofezevoponevozivididuxeparikopazagifutanesonajanimapeluxitikeremidejuvenujeginuwodesunuwukodaxugojutemulogutanitizalewafisomebonikixadexesu&keyword=el+camino+del+artista+julia+cameron&bowinesidufanoloforaxobiteripawawofupaf=fedavuximileperugujawixozisogarutekupozosusagigatotitasudenofubokitigexujibexuvafaketikezuzegakunazolinonulaPDF link annotation
    • https://sejes.gluvoob.com/68027116917326233918600627?soxozonugexasusajobekiwirexijizadamumematunom=wutekaperidegodunigejidumowidesamukavumamomuxibimodunibenoxiwogukudirofezevoponevozivididuxeparikopazagifutanesonajanimapeluxitikeremidejuvenujeginuwodesunuwukodaxugojutemulogutanitizalewafisomebonikixPDF link annotation
    • https://img1.wsimg.com/blobby/go/4d02ebb2-e6cb-4939-adfe-e191eb1694dc/downloads/82584374022.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/08222e05-7e80-4125-ae64-ff99e7d3e7ad/downloads/kuvumatizafepuzosifoxez.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/9eea3f58-1afc-44e6-b8c6-d1b29c57d2d2/downloads/gakokuko.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/9eea3f58-1afc-44e6-b8c6-d1b29c57d2d2/downloads/how_to_play_spanish_guitar_riffs.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_off0005b7fb.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005b7fb.bin)
🗂 Part of campaign: shared payload a02f67deb0 41 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b7fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7FB 8940 bytes
SHA-256: a02f67deb084b7ce8e02d7004994a9dd7e3132fe24919a42c6f0df6ed367c188
font_01_sfnt_off0005ca0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA0F 15840 bytes
SHA-256: d3d24897b771f65e75b2a934470f500641697643bccc9c12fb89ca2102ba5779