Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa3051c3b76c7e0…

MALICIOUS

PDF

82.7 KB Created: 2021-02-11 17:47:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2c4f59f515cf46be6d927fa6bcb0579e SHA-1: 2687d5762b86dce26a2c6a6c84a2001b9c0044b8 SHA-256: 7aa3051c3b76c7e04f78e57eeeca22497999835e77150eaa9844fb2fc43ec6b5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wb?keyword=maryland%20state%20archives%20guide%20to%20government%20records PDF link annotation
    • https://cdn.sqhk.co/xexanodu/ibihYP0/24282566025.pdfIn PDF document text
    • http://cloudplay.xyz/road_trip_quotes_tumblrl69xx.pdfIn PDF document text
    • https://cdn.sqhk.co/migazajigum/l6cnheq/impossible_quiz_answers_74.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/ibR4QoQ/51882492174.pdfIn PDF document text
    • http://khanapoorti.com/nacionalismo_vascofj0tt.pdfIn PDF document text
    • http://mignonette.space/topexafuxugopavuxa6rxh8.pdfIn PDF document text
    • http://ujjjrrrrr.space/rimidaf4bwn.pdfIn PDF document text
    • https://cdn.sqhk.co/benanejufa/RjgViug/18967619285.pdfIn PDF document text
    • http://betmoy54.com/arab_times_kuwaitl7g7p.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/ILP5ijM/71764302038.pdfIn PDF document text
    • http://wiinorama.space/536960566114d3r0.pdfIn PDF document text
    • https://cdn.sqhk.co/tufuboloruj/d4igJjb/70153956512.pdfIn PDF document text
    • https://laxatutokowo.weebly.com/uploads/1/3/5/3/135387201/7535235.pdfIn PDF document text
    • http://cashbackmoney.info/pdf_to_dwg_online_no_emailqqgli.pdfIn PDF document text
    • https://cdn.sqhk.co/suwajipufo/bhbginJ/30063773568.pdfIn PDF document text
    • http://idealica-it.website/acas_disciplinary_meeting_template8u0pk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/gapuvawuwilana.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/whatsapp_gb_2019_atualizado_uptodown.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_off000104a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A1 5520 bytes
SHA-256: fb75dc3b8f24971b9f9ec9282478211683455dc85b90ef66f97d91ad629df277
font_01_sfnt_off00011758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11758 11300 bytes
SHA-256: 7c1787912bffe27f26c129cd2ea3e771c0ceac6abf117b52f8260815f8ffe3c1