Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cda741732032295…

MALICIOUS

PDF

49.5 KB Created: 2020-09-28 16:47:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 028999511c32154c5ff08a4cb732fa35 SHA-1: f41cb212748f662da9ba94166fe8824081a7763a SHA-256: 0cda74173203229597806a2a4898eee93e5b92d89458c919b519fcf228f1340f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically a URL associated with a redirector. The document body, though partially corrupted, contains text suggesting it is a lure for a book on public administration, likely to entice clicks. The presence of numerous links and the redirection to a malicious domain indicate an attempt to lead the user to a compromised site or download further malware.

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/mozel?keyword=livro+administra%25C3%25A7%25C3%25A3o+publica+para+concurso+pdf In PDF document text
    • https://site-1037177.mozfiles.com/files/1037177/4213016095.pdfIn PDF document text
    • https://site-1037238.mozfiles.com/files/1037238/desinuwas.pdfIn PDF document text
    • https://site-1037178.mozfiles.com/files/1037178/remoku.pdfIn PDF document text
    • https://site-1036646.mozfiles.com/files/1036646/xunaroporitopiladorevetu.pdfIn PDF document text
    • https://site-1037028.mozfiles.com/files/1037028/fuwezo.pdfIn PDF document text
    • https://site-1037048.mozfiles.com/files/1037048/40246671848.pdfIn PDF document text
    • https://site-1036920.mozfiles.com/files/1036920/98017329.pdfIn PDF document text
    • https://site-1037035.mozfiles.com/files/1037035/98118193511.pdfIn PDF document text
    • https://site-1036781.mozfiles.com/files/1036781/degukugewesufux.pdfIn PDF document text
    • https://site-1037035.mozfiles.com/files/1037035/wimidaporil.pdfIn PDF document text
    • https://site-1037130.mozfiles.com/files/1037130/xubimal.pdfIn PDF document text
    • https://site-1037129.mozfiles.com/files/1037129/dufemekak.pdfIn PDF document text
    • https://site-1037262.mozfiles.com/files/1037262/putajazumodab.pdfIn PDF document text
    • https://site-1037082.mozfiles.com/files/1037082/87259922835.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/1/0428/1221/1359/files/71860822845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/38088529904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6269/7894/files/budget_analyst_job_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6369/6805/files/ultimate_alliance_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6094/4296/files/17650879843.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000671e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x671E 5940 bytes
SHA-256: 5a67fadef7b994d15f83c05d111d4577792466cb1a3ba595a9abffc288880502
font_01_sfnt_off00007a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A68 12272 bytes
SHA-256: cc28c5741e824620279c7cd3792c47b6cd50bd908b370c56036292053f02501a
font_02_sfnt_off0000a031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA031 16312 bytes
SHA-256: 028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b

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