Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1b8535e046e6641…

MALICIOUS

PDF

70.0 KB Created: 2021-02-16 10:35:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 289c3fa63521062a939d64322928a521 SHA-1: debcc328fb87f1ba86786f103b9383cfc6a0906e SHA-256: f1b8535e046e66418bb98532a05f516c53c334e5c708745d110957c611dd070b
126 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
  • 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/aws?utm_term=big+little+lies+male+cast+season+2+finale PDF link annotation
    • https://cdn.sqhk.co/tatiwurixiwo/hb3BibC/samsung_s7_official_ringtone_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sirobuse/6Kjh7he/66742607292.pdfIn PDF document text
    • https://cdn.sqhk.co/jidevumedure/AggJgek/japan_surplus_auto_parts_contact_number.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411683/normal_5fdff80192a37.pdfIn PDF document text
    • https://cdn.sqhk.co/pubamegumox/ggiahf4/fish_tanks_for_sale_used.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvotalek/ibUWjem/73152920871.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380223/normal_5fe3a35d0ad3d.pdfIn PDF document text
    • http://numidib.22web.org/cities_of_the_world_regional_patterns_and_urban_environments_7th_edition_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xuwugufufokiti.epizy.com/66724296187.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/jelagajiwaxetaxilobix.pdfIn PDF document text
    • http://moliposapivar.epizy.com/bullet_journal_template_for_ipad_pro.pdfIn PDF document text
    • http://mizebowofaz.epizy.com/9364271542.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/alma_da_festa_mega.pdfIn PDF document text
    • http://wubavon.epizy.com/namita_agrawal_all_odia_bhajan_songs.pdfIn PDF document text
    • http://guzimuj.rf.gd/rascals_movie_mp4_free.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_off0000d500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD500 5288 bytes
SHA-256: 30d5030b2de8fdef9b93dd38559435677f10eab85d71c11036026bd262f3e0e1
font_01_sfnt_off0000e6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F9 10712 bytes
SHA-256: ccc4dc5ddecd65458ca17e9072b235d0afe2ca6d1327d265d1320c7621fb2f9d