Malicious PDF — malware analysis report

Static analysis result for SHA-256 f180ff40af4a3d65…

MALICIOUS

PDF

67.6 KB Created: 2021-02-25 06:18:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 159aa41dde8713ff5c148a56cf72b205 SHA-1: b4ca68710b39cd01c362affd5ad9385ca024cde1 SHA-256: f180ff40af4a3d653539ffc5b6e3117811907cb90e9e5c3187860adefd3c45bb
224 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
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.
  • 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/award?keyword=how+to+check+my+post+office+account+online In PDF document text
    • http://datab.vip/transformer_fond_blanc_en_transparentvz6hx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447630/normal_601c9632dab4c.pdfIn PDF document text
    • https://nutikatike.weebly.com/uploads/1/3/4/6/134601603/zotuxigurufumule.pdfIn PDF document text
    • http://aires.fun/125274006525phvw.pdfIn PDF document text
    • http://mezoterilijixa.22web.org/krajowa_informacja_skarbowa_bielsko_biaa_nip.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/maroo_of_the_winter_caves_chapter_13_summary.pdfIn PDF document text
    • http://zisuwunoze.22web.org/malididetuzeset.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426955/normal_601f22c5889f0.pdfIn PDF document text
    • http://importants.space/autocad_basics_bookbpwfu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xezonadofugas.epizy.com/what_is_the_formula_for_compound_interest_rate.pdfIn PDF document text
    • http://jaxarafepemu.epizy.com/topironodowepufax.pdfIn PDF document text
    • http://nodufezazu.epizy.com/what_ideal_gas_constant_to_use.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/do_all_oral_b_brush_heads_fit.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_off0000ceab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAB 5376 bytes
SHA-256: 4d415bc891e0136d49e240fc022ca5f5d0e541e3f7a82acf5e0bfa2a8ef020ce
font_01_sfnt_off0000e0ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EF 9568 bytes
SHA-256: 3894e3e9202925990b6c269c5e99c0140dc9f929cd130a02629e8c1be0618094