Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3883f45add9d351…

MALICIOUS

PDF

70.1 KB Created: 2021-02-17 06:19:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 094d5eb9bf64fa7eff5fa965d486d1a4 SHA-1: 5b93b810efe3c43be15e8eb7de1b2e99721345f5 SHA-256: a3883f45add9d351459927247a3a9c1169ee105c97de7fb4379bc0bcb27ee53f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wix?keyword=star+trek+fleet+command+cheats+2020 PDF link annotation
    • https://cdn.sqhk.co/genepajev/VDijijM/petarep.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/jjShhuW/heroes_war_counterattack.pdfIn PDF document text
    • http://rejudatawenu.iblogger.org/sugekoredofo.pdfIn PDF document text
    • http://sexedate69.site/consonant_blends_worksheets_for_grade_1_free5nqmx.pdfIn PDF document text
    • http://helpcenter.business/que_es_el_sindrome_de_anemia_falciformet9m28.pdfIn PDF document text
    • http://covid-19online.site/galvanized_steel_sheet_fenceyofdd.pdfIn PDF document text
    • http://didavixakodix.22web.org/rd_burman_songs_ming.pdfIn PDF document text
    • https://cdn.sqhk.co/lukedivibeb/cgfjepH/kung_fu_ball_rhythm_heaven.pdfIn PDF document text
    • https://cdn.sqhk.co/pojimisuso/bAjgPt6/83957832458.pdfIn PDF document text
    • https://gudufuremozowa.weebly.com/uploads/1/3/4/4/134403830/fatekanepelufat-zegazog-sexuvevu.pdfIn PDF document text
    • https://cdn.sqhk.co/kurafuso/jaSLlwx/fajagozare.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://refaruzevogot.epizy.com/wolibekaxeda.pdfIn PDF document text
    • http://fukemasun.epizy.com/is_a_cricut_a_vinyl_cutter.pdfIn PDF document text
    • http://vukigopi.rf.gd/linux_kernel_code_style_guide.pdfIn PDF document text
    • http://faxumev.epizy.com/amona_tete_mabo_full_album_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/do_you_use_contractions_in_formal_writing.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_off0000d583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD583 5704 bytes
SHA-256: d64e504d06c62bbe79faa11bf5016993bb222656cebc8e4091d7c95042a0f48d
font_01_sfnt_off0000e8c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C8 9984 bytes
SHA-256: 69aa202d00167f3c76d1570731ff0ac56b1a7ee2fdec242a0e08896c9ee6cdfc