Malicious PDF — malware analysis report

Static analysis result for SHA-256 1954c207710834ec…

MALICIOUS

PDF

68.7 KB Created: 2021-02-28 19:39:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 5f0e8e11f667d1408410b3096f66843f SHA-1: f9666c36b7e82e02c3553d2c2f28bb0b3993920f SHA-256: 1954c207710834ec7a2a7899fa13fdc3855e737f183ea66d3cd59602cad6f666
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://dafemum.ru/wix?keyword=bobble+head+soccer+puzzle+playground In PDF document text
    • https://static.s123-cdn-static.com/uploads/4382194/normal_5fc79e520fec8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490364/normal_5fce8702a1703.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/53837163478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475204/normal_5fdc7b94cd01b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460060/normal_5fc7fed924f02.pdfIn PDF document text
    • https://rebejudan.weebly.com/uploads/1/3/5/3/135316845/sekewex_modelufis_rilozuzulu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366405/normal_6016ff0588929.pdfIn PDF document text
    • http://wodekenizowa.getenjoyment.net/udi_u818a_plus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vejegaba.atwebpages.com/35357247406.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/76559268321.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/john_deere_48_mower_deck_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/jopabemefilum.pdfIn PDF document text
    • http://gujimosodaza.myartsonline.com/survival_servers_ark_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/aramark_uniform_services_corporate_office.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_off0000cdbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDBD 5676 bytes
SHA-256: 7769529fe00987e9fbfbe9b4209df5bf82ad721b595000e531e3f0132ecde8a1
font_01_sfnt_off0000e10f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10F 10324 bytes
SHA-256: 535d362f56ef1cf508a54e6ee61e8526d2ac4400b6d65d9d2cdc8814c1dc2904