Malicious PDF — malware analysis report

Static analysis result for SHA-256 79381779c53c0a5e…

MALICIOUS

PDF

41.7 KB Created: 2020-10-05 10:54:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: c03daf5b738c545ad821e02001c42cee SHA-1: bc5ea6834c6f36cb20868c94638cbe3d0ca37bb5 SHA-256: 79381779c53c0a5eb56d7286839843e69f5eec492487e9f5b47ed927435ea067
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://gettraff.ru/strik?keyword=when+marnie+was+there+pdf In PDF document text
    • https://site-1043200.mozfiles.com/files/1043200/7895870640.pdfIn PDF document text
    • https://site-1037129.mozfiles.com/files/1037129/92490420416.pdfIn PDF document text
    • https://site-1036695.mozfiles.com/files/1036695/muruposoloriso.pdfIn PDF document text
    • https://site-1036930.mozfiles.com/files/1036930/37794806522.pdfIn PDF document text
    • https://site-1039896.mozfiles.com/files/1039896/36051532065.pdfIn PDF document text
    • https://site-1039918.mozfiles.com/files/1039918/74143256927.pdfIn PDF document text
    • https://site-1037145.mozfiles.com/files/1037145/47390278300.pdfIn PDF document text
    • https://site-1036969.mozfiles.com/files/1036969/13923127928.pdfIn PDF document text
    • https://site-1041378.mozfiles.com/files/1041378/44687988822.pdfIn PDF document text
    • https://site-1037059.mozfiles.com/files/1037059/91271961727.pdfIn PDF document text
    • https://site-1041388.mozfiles.com/files/1041388/44607557382.pdfIn PDF document text
    • https://site-1043885.mozfiles.com/files/1043885/pijisokiw.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/f8ab4f70-107f-494a-b79f-50b672daeb5d/pexatofajedidufutiri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57605572-f983-433e-9f3b-220c4dccfe98/80504769280.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fd53243-5b05-4aba-ae91-8bac832b80c1/90727800103.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e1c88bf-4e22-4591-8768-8c487191f068/pigewokorefuzijorolurib.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_off000065e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E5 5352 bytes
SHA-256: 56213f59c1b216dfbe8c8fb768b0250dc754760b6bcc7a267843c7aac3bfb248
font_01_sfnt_off00007804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7804 9944 bytes
SHA-256: ad136aff136c7f495e593bd8d45823b51c36651bd986a8ba8fb1f9fcf01fe2d2

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