Malicious PDF — malware analysis report

Static analysis result for SHA-256 06bd480f78211cba…

MALICIOUS

PDF

74.5 KB Created: 2021-01-19 14:47:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 6a801ef2fb0492fa50be86b34ee9c991 SHA-1: 9729f88668791c453c86619d7a3efdd5284d39bb SHA-256: 06bd480f78211cba7446cb463efa620d641b3c53867be230572db87e0641aa86
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/wb?keyword=word%20crossy%20butterfly%20game%20rules In PDF document text
    • https://site-1250990.mozfiles.com/files/1250990/27272426028.pdfIn PDF document text
    • https://cdn.sqhk.co/tufuboloruj/euGdhjd/54156858003.pdfIn PDF document text
    • https://site-1168339.mozfiles.com/files/1168339/bexawivuzilasitoseda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426066/normal_5fa329b3cc278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476930/normal_5fbeda7bba20c.pdfIn PDF document text
    • https://site-1208355.mozfiles.com/files/1208355/endocrine_system_worksheet_answers_section_a.pdfIn PDF document text
    • https://fitinunajixir.weebly.com/uploads/1/3/1/6/131637477/2a6e5785.pdfIn PDF document text
    • https://site-1168129.mozfiles.com/files/1168129/51801127922.pdfIn PDF document text
    • https://cdn.sqhk.co/dezosanag/geSghjc/jugamanuvajetenopilipi.pdfIn PDF document text
    • https://dudakodut.weebly.com/uploads/1/3/4/4/134497067/9820049.pdfIn PDF document text
    • https://site-1177796.mozfiles.com/files/1177796/macmillan_english_5_teacher_s_guide.pdfIn PDF document text
    • https://powufekati.weebly.com/uploads/1/3/4/0/134012492/7320946.pdfIn PDF document text
    • https://site-1172757.mozfiles.com/files/1172757/forgotten_hill_mementoes_poki.pdfIn PDF document text
    • https://cdn.sqhk.co/pofaxiniraz/L9hjjjd/26791456161.pdfIn PDF document text
    • https://repugololenip.weebly.com/uploads/1/3/4/8/134880500/5332788.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/wobuzisibal/ziwozotevagazixiju.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/rumuvuwogadigupujiku.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/dark_souls_remastered_pyromancer_leveling_guide.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_off0000e56c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56C 5596 bytes
SHA-256: 4ba50f37b46afe6c245071a3e305c85c9ad70235838396fd3819eaedda65baf6
font_01_sfnt_off0000f876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF876 10668 bytes
SHA-256: 0646188967b07010ef9406b96b955e737300cde6ffbd231f7792b946cdc46ea0

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