Malicious PDF — malware analysis report

Static analysis result for SHA-256 f39115a84d62d365…

MALICIOUS

PDF

70.7 KB Created: 2021-02-19 14:36:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3ac0228c1ade4cdf625a6bc66ae8aeb8 SHA-1: 5092e717db726de7282382cdfa1836f2bcb4adae SHA-256: f39115a84d62d365dfce636eb1a6a423d3267783dc7f24821bb8b0e82875ccdb
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=arizona+news+desert+sky+mall PDF link annotation
    • https://cdn.sqhk.co/terasovo/f79Bjb2/cake_box_recipe_ideas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471719/normal_5fe90d3d5b6ae.pdfIn PDF document text
    • https://poroxokinawutaj.weebly.com/uploads/1/3/4/5/134507376/739071aa5f.pdfIn PDF document text
    • https://pinowutofabu.weebly.com/uploads/1/3/4/7/134763632/e7db3aa404.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459058/normal_5ff69f5b92b47.pdfIn PDF document text
    • https://cdn.sqhk.co/kominepoli/ihgjRjd/granny_house_game_download_free_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/idV5hf7/samsung_galaxy_s10_stock_ringtones_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369774/normal_5ff072d27174d.pdfIn PDF document text
    • https://dibevapanowodi.weebly.com/uploads/1/3/0/7/130776811/25f9a339cde3f2.pdfIn PDF document text
    • http://felidefewipikig.22web.org/trastorno_bipolar_dsm_5.pdfIn PDF document text
    • https://lilofuzaxodas.weebly.com/uploads/1/3/0/7/130775659/9938207.pdfIn PDF document text
    • https://telixezudaridif.weebly.com/uploads/1/3/0/7/130775339/tiladatuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kizarepopudoso.epizy.com/fugexufidijuxopewejesome.pdfIn PDF document text
    • http://tekojexabutixas.epizy.com/bovinorikebemafu.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_off0000d8da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8DA 5268 bytes
SHA-256: f4bd1e623f3cbd52f386c9b6c19a673983486467f387219547023a4b190b55de
font_01_sfnt_off0000eacc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACC 10328 bytes
SHA-256: e653b62fcebbb1716c5efe5b1ed777f50c9fa429b0ca51143b529dc92d7f77c6