Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d58535725d7669…

MALICIOUS

PDF

80.9 KB Created: 2021-01-13 07:57:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 9ba6bae17cf3de4192c081315f90fd39 SHA-1: 044e93b8d562eb2ad46a9ab7791b3c6e3640ab40 SHA-256: c5d58535725d766921161d3d295dbc92a4b2bae42c34fc9ee711c4fef59d1ca6
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ggtraff.ru/wb?keyword=retroarch%20cores%20not%20downloading In PDF document text
    • https://site-1166595.mozfiles.com/files/1166595/neo_geo_arcade_stick_pro_full_game_list.pdfIn PDF document text
    • https://site-1176205.mozfiles.com/files/1176205/xeminizafenamavuginizosar.pdfIn PDF document text
    • https://site-1168315.mozfiles.com/files/1168315/kelujozobutusel.pdfIn PDF document text
    • https://site-1083679.mozfiles.com/files/1083679/laluvinojutomomo.pdfIn PDF document text
    • https://site-1172173.mozfiles.com/files/1172173/nda_exam_eligibility_after_graduation.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500677/normal_5fd14b433134b.pdfIn PDF document text
    • https://site-1177315.mozfiles.com/files/1177315/mastercraft_tires_customer_reviews.pdfIn PDF document text
    • https://site-1174676.mozfiles.com/files/1174676/lutuxebiji.pdfIn PDF document text
    • https://site-1176699.mozfiles.com/files/1176699/jegivifinebem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/muxegeza/xajitat.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/custom_carbonless_contract_forms.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE4 8676 bytes
SHA-256: 596902f7e183d85d880eeb5cb100a8feb3ac33b6710faf86e5a3c36cf4e58a72
font_01_sfnt_off0000fcfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFB 5300 bytes
SHA-256: ca038cc5c6f9c1df59a605c3786a4c6f1ae8c9a74cc5892bbcfdd26941e3e861
font_02_sfnt_off00010f0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F0C 11660 bytes
SHA-256: c386e0793c66a943b3d85078e49abc6538ac82d3f66e3c3dd2702a9bde9f54f2