Malicious PDF — malware analysis report

Static analysis result for SHA-256 7386ec4397dfe93b…

MALICIOUS

PDF

66.2 KB Created: 2021-02-07 17:30:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b8343f03cf5178aebe84575f94f006dc SHA-1: 966eb5442dd273027090b8c34d65037569460977 SHA-256: 7386ec4397dfe93be34efe3ae7ffb0415bcee2dffdada834f549ad162d47d6e8
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/aws?utm_term=hamilton+beach+flexbrew+user+guide In PDF document text
    • https://wetolobumusu.weebly.com/uploads/1/3/4/5/134579125/rewugobolagufuriv.pdfIn PDF document text
    • https://wexabegolorumad.weebly.com/uploads/1/3/4/3/134351445/litewito.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/jdgh2gg/pinout_rj45_poe.pdfIn PDF document text
    • https://dibekojiworibo.weebly.com/uploads/1/3/1/6/131637919/paledanur-gexaba-babuke.pdfIn PDF document text
    • https://gefizubumob.weebly.com/uploads/1/3/4/4/134473977/zililavamu.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/hgoavS6/grand_theft_auto_vice_city_ps4_review.pdfIn PDF document text
    • https://paleforekirito.weebly.com/uploads/1/3/4/5/134579508/tetigumuv-popuzanilejuza-vojazafug-poxexoxofitop.pdfIn PDF document text
    • https://gofolepoxi.weebly.com/uploads/1/3/4/8/134882907/tefegi_retiwax.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/JSii5TL/callaway_gardens_christmas_lights_tickets.pdfIn PDF document text
    • https://cdn.sqhk.co/xaveredero/dgcBSvk/tanglewood_golf_course_nc.pdfIn PDF document text
    • https://jixawapideraje.weebly.com/uploads/1/3/3/9/133997308/jikinepoten.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/molox.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/wokeposo.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/remopi.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/16198668316.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC392 5696 bytes
SHA-256: 131cf882bc47ed80f4f5889edd5be72b99fdf0ff66dec10fbc504650efe1ef05
font_01_sfnt_off0000d6dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DD 10788 bytes
SHA-256: 65a66ca39281d5fe29b4f0c6b9dc43524f6ffad936945d8a8f81cc6c04eea0f5