Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 534f6f9298b907d2…

MALICIOUS

PDF / .VIR

128.5 KB Created: 2023-10-18 12:32:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2024-06-29
MD5: 41ed35171619f7fc6168609373a2ed04 SHA-1: ed79e4a0f678aa9f0b279031ad979b6094c931b5 SHA-256: 534f6f9298b907d2498b02378b958575c19ebabf6a7f26f92a324dc3e547ae8d
166 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2706

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
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://fozebe.octort.co.za/9130713585823634293155?xasozexejojilaxopivorewupenafebatidebezuretuvomukubikedumufureparoxof=fimakitopewujibitorigilipozitifomipadabisufuduwalususonusarugadodeligulisetefosuzokimozejofadoxezakotifusemexapudaliruwituxezubojubarateluvonujipifokawimuxudirogomozivukimuwaxowiwasigisimujaxexibisaki&keyword=cryptography+ppt+pdf&vamedowakebanozowogufokazivuzatesufototerazoruvawuwawowivapirun=mopilorivurigutadosolixukilulumebimelutodofikajanifilumipumezusukunudutinalepulamobiromefatejejisululimowuxusemufitedimumewasamobuj In PDF document text
    • https://fozebe.octort.co.za/9130713585823634293155?xasozexejojilaxopivorewupenafebatidebezuretuvomukubikedumufureparoxof=fimakitopewujibitorigilipozitifomipadabisufuduwalususonusarugadodeligulisetefosuzokimozejofadoxezakotifusemexapudaliruwituxezubojubarateluvonujipifokawimuxudirogomozivukimuwaxowiwasigisimujaxexibisaki&keyword=cryptography+ppt+pdf&vamedowakebanozowogufokazivuzatesufototerazoruvawuwawowivapirun=mopilorivurigutadosolixukilulumebimelutodofikajanifilumipumezusukunudutinalepulamobirPDF link annotation
    • https://fozebe.octort.co.za/9130713585823634293155?xasozexejojilaxopivorewupenafebatidebezuretuvomukubikedumufureparoxof=fimakitopewujibitorigilipozitifomipadabisufuduwalususonusarugadodeligulisetefosuzokimozejofadoxezakotifusemexapudaliruwituxezubojubarateluvonujipifokawimuxudirogomozivukimuwaxowiwPDF link annotation
    • https://jimdo-storage.global.ssl.fastly.net/file/5a06ef41-1973-4a7b-a385-8591cdcb69a5/48329188059.pdfIn PDF document text
    • https://jimdo-storage.global.ssl.fastly.net/file/321fac16-6048-4a52-9d8c-3153ba09e3da/49653837024.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_off0001be14.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001be14.bin)
🗂 Part of campaign: shared payload a02f67deb0 41 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001be14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BE14 15060 bytes
SHA-256: 0d2b8109aaae7a337ae2d6da8a65c9d00d0e6be490b9f937de2b62daf5d0147e
font_01_sfnt_off0001e411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E411 8940 bytes
SHA-256: a02f67deb084b7ce8e02d7004994a9dd7e3132fe24919a42c6f0df6ed367c188