Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2f99dbc7d3af896…

MALICIOUS

PDF

82.3 KB Created: 2021-03-03 06:58:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 73fdb33448a3f30af875cc73805063f7 SHA-1: cb336eefcb1593a6ab47a5a31ee72a1a55123dfa SHA-256: b2f99dbc7d3af8963698b92a521c721c62dae8926622cdcae10e30645b9dfce7
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://gimoguvi.ru/wix?keyword=electricity+guided+reading+and+study+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489583/normal_603e54f41bb03.pdfIn PDF document text
    • http://getdouche.xyz/jojuzipi3ui7g.pdfIn PDF document text
    • http://naturfresh.fun/maleficent_mistress_of_evil_imdb_parents_guidebrqa1.pdfIn PDF document text
    • http://vvvvvvvvvvvvvvvvvvvvvb.xyz/fakagarukh9zq4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455884/normal_60153804e889c.pdfIn PDF document text
    • http://jijimaxugixu.22web.org/5689640505.pdfIn PDF document text
    • http://gojawufeki.getenjoyment.net/why_is_my_tv_power_button_blinking.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/58W7anc/48164546330.pdfIn PDF document text
    • https://cdn.sqhk.co/jisaside/grUECib/sixufagodimoxakuwabod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426060/normal_5ffeb72016dd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465685/normal_6026e426e117b.pdfIn PDF document text
    • https://cdn.sqhk.co/dugixikisim/Ygcfuid/bavalu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://demuremapinob.epizy.com/strategic_business_plan_example_template.pdfIn PDF document text
    • http://dokudaruriwiv.atwebpages.com/54705365644.pdfIn PDF document text
    • http://jivuruponozo.epizy.com/teacher_edition_bible_study_guide_sda.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_off0001059e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1059E 5256 bytes
SHA-256: e538551828e79cf16ea097be9ae02307ff10bdfb1da6159687453acb6401f04d
font_01_sfnt_off000117a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117A8 10760 bytes
SHA-256: cd1524c0fbc9fae4b24cf144a692d6aea79c3b5528f6cc2d05c089840942b82c