Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d063062f08d320…

MALICIOUS

PDF

69.2 KB Created: 2021-02-11 07:10:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 339e0188ade47366b73fef8582ad16f2 SHA-1: 5d1d56fb80ad3c7aff639d19a7514a560f0840a8 SHA-256: c5d063062f08d3200af65159f71d1d69f1ce03ccb06b512c7199dcf0db0c2ceb
126 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
  • 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.
  • 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://jacksth.ru/aws?utm_term=insulated+concrete+forms+training PDF link annotation
    • https://bemetezebore.weebly.com/uploads/1/3/4/8/134882820/9901783.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459774/normal_602049c182f3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420224/normal_5fff40f5e9132.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387928/normal_600fd78a42fd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453328/normal_5fdb19b7de67e.pdfIn PDF document text
    • http://wacc-cat.org/sap_in_transit_inventory_reportpi30u.pdfIn PDF document text
    • https://cdn.sqhk.co/kolokejo/ZeyjhVW/map_horror_for_minecraft.pdfIn PDF document text
    • http://lnstagrambusiness.com/riwulizakasutegarupitiqt8a9.pdfIn PDF document text
    • http://liketime.online/el_video_de_la_nia_de_facebook_compo137q.pdfIn PDF document text
    • https://rexakutomas.weebly.com/uploads/1/3/0/7/130739652/muxasol.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/ighfEib/55805422038.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://napalujimawoz.rf.gd/corymbia_maculata_fact_sheet.pdfIn PDF document text
    • http://dufazovuko.epizy.com/96101995593.pdfIn PDF document text
    • http://gotojin.rf.gd/fr120_datasheet.pdfIn PDF document text
    • http://luzivamo.epizy.com/hospital_cafeteria_menu_template.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_off0000d0fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0FD 5276 bytes
SHA-256: 9e9e35da4134998684851b47e6f5f2143a0460b4e5eb37d7619c31be4bf5f553
font_01_sfnt_off0000e2d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D3 10884 bytes
SHA-256: 96e59d5c9ddc0c611e98deb9ca3bb126fd638ff2ddcbbc8f153489cfc7a0203f