Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5da3104a7b114c7…

MALICIOUS

PDF

40.6 KB Created: 2020-10-13 21:51:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 1c9695e926265989c92ac46be16c861c SHA-1: 87ae8a78b732846ae4e8c9513edcfe5107a24bc5 SHA-256: c5da3104a7b114c77dc486ff92bf3cf84bcef5b5d49b88312767ce649709f6ff
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=import+export+code+application+form+pdf In PDF document text
    • https://site-1044029.mozfiles.com/files/1044029/1275618527.pdfIn PDF document text
    • https://site-1043088.mozfiles.com/files/1043088/34325237290.pdfIn PDF document text
    • https://site-1040879.mozfiles.com/files/1040879/6804071811.pdfIn PDF document text
    • https://site-1038944.mozfiles.com/files/1038944/74508477549.pdfIn PDF document text
    • https://site-1039720.mozfiles.com/files/1039720/75315090986.pdfIn PDF document text
    • https://site-1039607.mozfiles.com/files/1039607/bejaletupunave.pdfIn PDF document text
    • https://site-1039320.mozfiles.com/files/1039320/71926232368.pdfIn PDF document text
    • https://site-1038729.mozfiles.com/files/1038729/judotumum.pdfIn PDF document text
    • https://site-1043406.mozfiles.com/files/1043406/16098431643.pdfIn PDF document text
    • https://site-1037844.mozfiles.com/files/1037844/50899628530.pdfIn PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/tikobebexojopopasuf.pdfIn PDF document text
    • https://site-1038553.mozfiles.com/files/1038553/bawurexikolaburexuga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/178a4fdb-7ad8-402a-92af-a7ec3bc0538f/53365689222.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d5fe5a2-a6e8-4f77-96e3-7ccabf9c4cfa/delexinom.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_off0000606f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606F 5128 bytes
SHA-256: 86e3d58d781f5d7a6e1d2be2c62366ef91c1e3dcc3a9f9af98dcb8a3c3ba084f
font_01_sfnt_off000071c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C8 10604 bytes
SHA-256: 890ef35c51e85ac195de88fb745ce100e7993dc4c21cc3358c47702cde59d3b1

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