Malicious PDF — malware analysis report

Static analysis result for SHA-256 018f729fcfa76d8c…

MALICIOUS

PDF

43.8 KB Created: 2020-11-03 15:52:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-08
MD5: ceb6966911be527e35a7fd91a9146506 SHA-1: e834fa462ea2c719a9804357e94f5693374fbfa4 SHA-256: 018f729fcfa76d8ce2c214b0b4e9cb8d00c02b8ff4541e95bde5c56e88d489e8
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=mary%20chilton%20dar%20foundation%20grants In PDF document text
    • https://cdn-cms.f-static.net/uploads/4392218/normal_5f9ad7895e20a.pdfIn PDF document text
    • https://zeteparikimifol.weebly.com/uploads/1/3/1/6/131637109/mexafijavewurir.pdfIn PDF document text
    • https://lenololiwi.weebly.com/uploads/1/3/4/4/134455370/wovanovapinetet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372371/normal_5f8a980ce2d3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_5f8f70358eb51.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/acog_practice_bulletin_no._95_anemia_in_pregnancy.pdfIn PDF document text
    • https://sozivawar.weebly.com/uploads/1/3/4/5/134511290/mumapopejoref_nimakiz_xexuvisebilukux.pdfIn PDF document text
    • https://mojenosude.weebly.com/uploads/1/3/1/3/131382274/motirala-vepojivoral.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiwovowus/mios_dios_translate_spanish.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f919f09d9890.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/zutilipevozafeguwu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f871152de258.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406776/normal_5fa0862c8100e.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000697a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000697a.bin)
    • 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 extracted file (font_00_sfnt_off0000697a.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000697a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697A 5392 bytes
SHA-256: 566c8c80361dc900bf3dc93c553c9df4417e46f4913a6c19732d70a24968bbeb
font_01_sfnt_off00007bdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BDF 11176 bytes
SHA-256: 9a79dc9cc5f1290f2efa3411dd7a74e7d1a344b84c07a958afdf0cde49555ce1