Malicious PDF — malware analysis report

Static analysis result for SHA-256 23ca8ab9346038ae…

MALICIOUS

PDF

75.1 KB Created: 2021-02-21 23:40:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 22c3418878659f5a321999394bb3aab4 SHA-1: a4d4e6f14e4a84d4069cb6f3f62cb30882d99480 SHA-256: 23ca8ab9346038ae81716485cede2da5ed1d5ca37c18a20b9db4d8017e180f80
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://maypoin.ru/wb?keyword=how%20to%20make%20rice%20in%20a%20power%20cooker%20plus PDF link annotation
    • http://sfr-espace.best/kubota_d905_service_manualrgjzr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_60283caf2c08b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426257/normal_602d631ba1d03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475564/normal_5ffe84c11c8d1.pdfIn PDF document text
    • http://covidcapsule.world/amcor_annual_report_20064nglp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420599/normal_5ff75798d0c4d.pdfIn PDF document text
    • https://nezuvaju.weebly.com/uploads/1/3/0/9/130969963/5808817.pdfIn PDF document text
    • http://robinmani.site/92376889471dl2ak.pdfIn PDF document text
    • http://yourcy.com/gudizejo8sffb.pdfIn PDF document text
    • https://titevajap.weebly.com/uploads/1/3/2/7/132741099/93b70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470832/normal_5ff3cbc581fd6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371495/normal_5ffddae2f1d4a.pdfIn PDF document text
    • http://freshka.fun/57052744214ohncy.pdfIn PDF document text
    • https://fusavufotopos.weebly.com/uploads/1/3/4/6/134634064/funom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://laletanegimiw.epizy.com/xeletufomo.pdfIn PDF document text
    • http://wosumobikufiw.rf.gd/costing_sheet_in_excel_software.pdfIn PDF document text
    • http://pinezininefos.epizy.com/43634976296.pdfIn PDF document text
    • http://vagimosaperijoz.epizy.com/57135467808.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_off0000e9db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DB 5196 bytes
SHA-256: f2f8172f1390692103c66245acf31ba5ca75ba122305c98a63a77dfee1a3c565
font_01_sfnt_off0000fb7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7C 10420 bytes
SHA-256: 8e29abcf584a53b211227dd78dddcd05fa87e153dadf52f2a3ce65726550b905