Malicious PDF — malware analysis report

Static analysis result for SHA-256 41685b60e605b463…

MALICIOUS

PDF

73.3 KB Created: 2021-02-18 14:38:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 07b20ffe9d46c26a3ef637f0c24b991a SHA-1: 90bb79522964d6f70797b1020a62629ac049d0c3 SHA-256: 41685b60e605b463264a2514ec7d1ab87a0993c196b5ff1b739a861e66bb0ee6
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=mobogenie+market+apk+uptodown In PDF document text
    • https://cdn.sqhk.co/daposofoxig/tigNAih/pelirodexuxonarit.pdfIn PDF document text
    • http://gogemupiru.22web.org/written_warning_template_for_alcohol.pdfIn PDF document text
    • http://lnstagram-helping.live/sesunimiwuzopejotugino1rb42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503533/normal_602dffcbbfb6d.pdfIn PDF document text
    • http://jsexj.fun/95414115179asg10.pdfIn PDF document text
    • http://sreda.city/download_skripsi_akuntansi_perpajakankyhns.pdfIn PDF document text
    • http://health-top.ru/bba_aviation_2008_annual_report2u39m.pdfIn PDF document text
    • http://jurelireroxux.22web.org/kadifujenakowido.pdfIn PDF document text
    • https://cdn.sqhk.co/xogatijixe/dvljgig/cricket_bowling_machine_hire_near_me.pdfIn PDF document text
    • http://lorowivo.22web.org/buy_warrior_cats_books_online.pdfIn PDF document text
    • http://simultaneously.space/26345806985db44a.pdfIn PDF document text
    • http://gigazukiwizave.22web.org/78451379466.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dipimov.epizy.com/dk_solo_guide_osrs.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/acidity_testing_kit_of_transformer_oil.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/30616576262.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_off0000dc21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC21 5368 bytes
SHA-256: 96fcdb41b27c415cdbf3ab03643c18fbe6f5ab04e6efef40c131f78da12fee5a
font_01_sfnt_off0000ee66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE66 16220 bytes
SHA-256: 64589fb1ae2c08b2eba808dcdd6bbf0460f022b83ba3514deec55b368b63f4b5