Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e242da67e81762…

MALICIOUS

PDF

76.2 KB Created: 2021-02-27 05:05:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0ee7672b57cd71b1cf9bda725e5ef947 SHA-1: 45234ee901b230de805cdfefc53677f804a72b9e SHA-256: 17e242da67e817621f7bdb7572cfce51c6c659fcec70f0c93c4121a081ca69a5
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://yafferge.ru/123?utm_term=bertrand+russell+books+online In PDF document text
    • http://famozosivupiwij.sportsontheweb.net/41511632551.pdfIn PDF document text
    • http://veruvipavopa.getenjoyment.net/dell_m6800_dimensions.pdfIn PDF document text
    • http://bekopomulasebi.getenjoyment.net/mass_flow_rate_formula_for_heat_exchanger.pdfIn PDF document text
    • http://wapividazofar.scienceontheweb.net/44761782257.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412382/normal_6001d830b2b40.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500904/normal_5ff3f4d5e693f.pdfIn PDF document text
    • http://xubanapirobula.mypressonline.com/15639991196.pdfIn PDF document text
    • http://dajexori.mypressonline.com/raroxepowewixodigewubinu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417519/normal_5fd6449f989e5.pdfIn PDF document text
    • http://lifegirls.site/kukavajusonesediwikismgndu.pdfIn PDF document text
    • http://nakozek.mypressonline.com/80809557880.pdfIn PDF document text
    • http://sibatike.getenjoyment.net/56981242207.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sidepojedava.myartsonline.com/core_connections_algebra_1_chapter_4_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/wicca_year_and_a_day.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/sars_logbook_2019_template_excel.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_off0000ee4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4F 5072 bytes
SHA-256: d723f7579f9f682d67011fc1d9de7fc971b9aa921c73a8e9a1b3cbfb4a03c061
font_01_sfnt_off0000ff98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF98 10772 bytes
SHA-256: 090ba209da055adf953155ea3c2cb9001ce52ba1ec4fd69254222a0ecca72b8a