Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d36c05f103f08ce…

MALICIOUS

PDF

70.8 KB Created: 2021-02-15 08:14:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ee9c93e5d4b0c34b68c10d14b6c069ca SHA-1: bd8b2eb326738accbafebed9852b48b925375fe9 SHA-256: 7d36c05f103f08ce88edd4c46d24efddaa44073da4f71e8e8c24375c3aedf80d
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/123?utm_term=happy+wheels+5 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403557/normal_602308a7ebc36.pdfIn PDF document text
    • https://cdn.sqhk.co/gitaligido/jc9igE9/strategic_plan_appendix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454982/normal_6018a55666a4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474980/normal_602784ea36a05.pdfIn PDF document text
    • https://cdn.sqhk.co/pasivuzuke/FyAVia9/five_star_pizza_burger.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418368/normal_5fec25245914d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384469/normal_5ff90efa2974d.pdfIn PDF document text
    • https://cdn.sqhk.co/mibemofega/ebK7Did/notewapupebanowekinip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456121/normal_5fe7bc9b1cbe8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mukoxegolada.epizy.com/facebook_video_er_for_iphone_8.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/fizofivo.pdfIn PDF document text
    • http://raziwisubuza.rf.gd/bartender_resume_templates.pdfIn PDF document text
    • http://kurivixudenetiw.epizy.com/finodipis.pdfIn PDF document text
    • http://wobemiko.epizy.com/sezedivojejosuvawaro.pdfIn PDF document text
    • http://zebigibozudival.epizy.com/piano_notes_for_beginners_with_letters.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_off0000da78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA78 5092 bytes
SHA-256: 818f16fb5488db24f7e5e49576a408c8f8793102e3fbe9775a4524103b67b6f0
font_01_sfnt_off0000ebe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE5 10080 bytes
SHA-256: 6533f7a2a7e3129a5ad1456e8e4ec2015686fc2f152d9e2387b8ee3b9b5c1e15