Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7de7b2fbaede592…

MALICIOUS

PDF

72.4 KB Created: 2021-02-14 14:47:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e53cad66378dc6b9cc1e51c17ec7b37e SHA-1: 37316f7020cc976f7a9b3cf932c8cb24c0944e73 SHA-256: f7de7b2fbaede592a0e8607451a2e27c5ea980ef11d48f6f8479dd37515139e9
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://crophysi.ru/wix?keyword=2015+isuzu+npr+hd+owners+manual In PDF document text
    • http://enots.space/aiden_witcher_37u059.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410695/normal_5fe3f403d2e7f.pdfIn PDF document text
    • http://fenellalucynelle.info/xps_8300_specificationsrib3w.pdfIn PDF document text
    • http://salonlabs.xyz/david_attenborough_dynasties_australia_tv_guidetuxal.pdfIn PDF document text
    • http://strongcreditscore.info/graphing_rational_functions_worksheet_and_answers95g3t.pdfIn PDF document text
    • http://rollernefritmassage.xyz/bej_rentea_georgiana_ingrid82lty.pdfIn PDF document text
    • http://domavera.ru/wakiromedosimivegexirop3d1vu.pdfIn PDF document text
    • http://instapriz365.site/active_and_passive_transport_quizoqhe4.pdfIn PDF document text
    • http://itabody.space/55635759540zy09r.pdfIn PDF document text
    • http://girlsbeach.space/dotisesokm0zz.pdfIn PDF document text
    • https://dimazupaw.weebly.com/uploads/1/3/2/8/132814154/7cf52226.pdfIn PDF document text
    • http://inmyshtangen.xyz/business_manager_job_description_non_profit51nbr.pdfIn PDF document text
    • https://wokonupojelofa.weebly.com/uploads/1/3/5/3/135351156/pupazi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411252/normal_601da3730ad69.pdfIn PDF document text
    • https://novigavaze.weebly.com/uploads/1/3/0/8/130874354/a5c96.pdfIn PDF document text
    • https://zowukabizuvor.weebly.com/uploads/1/3/1/6/131636697/acafac58d21d.pdfIn PDF document text
    • http://goldstein.berlin/95803745662uocip.pdfIn PDF document text
    • http://maewallace.com/minorafividawebcnlaz.pdfIn PDF document text
    • http://blancop.xyz/company_profile_prudential_indonesiagtkp1.pdfIn PDF document text
    • http://honbiz.pro/fagowomiperexowikozomukepstn0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000de4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4C 5696 bytes
SHA-256: a6960ddc28816bb5d65a20a01b287029411a852aa28740448abc82c6ddd9dc8a
font_01_sfnt_off0000f1a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A0 10200 bytes
SHA-256: 3f7bf41cf4c75001a49f35bf44d67c928284978f1689d185e49c0597e4445239