Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3484d78503c2b62…

MALICIOUS

PDF

40.2 KB Created: 2020-10-08 14:49:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 965906c627a7513313b5a44c657416d2 SHA-1: 004d0ce0a7615ab53b03cebfc5b72f41ab09998f SHA-256: e3484d78503c2b621c88bf6bf420519bb7b9ceffce2b776120a3dfc7e13db364
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://cctraff.ru/strik?keyword=hernia+umbilikalis+pada+anak+pdf In PDF document text
    • http://files.llanfarianevents.nl/uploads/1/3/2/6/132695388/388f750b87cfd.pdfIn PDF document text
    • http://files.tumalofeedcosteakhouse.com/uploads/1/3/1/4/131406140/panevip.pdfIn PDF document text
    • http://sibaviwed.bekindbeyou.com/uploads/1/3/0/8/130874030/6544784.pdfIn PDF document text
    • https://site-1037903.mozfiles.com/files/1037903/32083930943.pdfIn PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/94659785308.pdfIn PDF document text
    • https://site-1042448.mozfiles.com/files/1042448/15450027861.pdfIn PDF document text
    • https://site-1036646.mozfiles.com/files/1036646/86687272846.pdfIn PDF document text
    • https://site-1043668.mozfiles.com/files/1043668/65619184944.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7881/9735/files/pastor_ovejero_australiano_colores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3594/9218/files/public_policy_theories_slideshare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5603/7017/files/cuantas_constelaciones_hay_en_la_actualidad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5646/3001/files/charles_finney_revival_lectures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6713/8460/files/62337173873.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_off00006173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6173 5352 bytes
SHA-256: 7c593dc59303a4e2491692cdefec945f16ea86def13e7fc59ef3a1644a221865
font_01_sfnt_off00007380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7380 9576 bytes
SHA-256: 556e4123c089cb4e27ddd7b8c5b045963e16a9ad9f5ef958aee0afff00524edf