Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dfe757f1fb20ab6…

MALICIOUS

PDF

41.9 KB Created: 2020-09-30 02:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-18
MD5: c5c93edc1690d7837be4c06c5ba1fd0e SHA-1: 8655025add3ce60c80165711e723e645f4e448df SHA-256: 6dfe757f1fb20ab60debc24b9cee9d80df80fa3a67982c6429b2731391ec9aa6
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://ggtraff.ru/strik?keyword=arterial+blood+gases+analysis+pdf In PDF document text
    • https://site-1036733.mozfiles.com/files/1036733/fixivumumesig.pdfIn PDF document text
    • https://site-1036786.mozfiles.com/files/1036786/sibokorexijosazisuf.pdfIn PDF document text
    • https://site-1036900.mozfiles.com/files/1036900/14492385523.pdfIn PDF document text
    • https://site-1037101.mozfiles.com/files/1037101/nezelugixaxeki.pdfIn PDF document text
    • https://site-1036772.mozfiles.com/files/1036772/vojoxuvilabevuk.pdfIn PDF document text
    • https://site-1036818.mozfiles.com/files/1036818/kufoviwomopivipijezufa.pdfIn PDF document text
    • https://site-1037120.mozfiles.com/files/1037120/91315242854.pdfIn PDF document text
    • https://site-1036681.mozfiles.com/files/1036681/23496855629.pdfIn PDF document text
    • https://site-1037178.mozfiles.com/files/1037178/tugalijebazowelu.pdfIn PDF document text
    • https://site-1037897.mozfiles.com/files/1037897/kuxusimal.pdfIn PDF document text
    • https://site-1037192.mozfiles.com/files/1037192/64286085095.pdfIn PDF document text
    • https://site-1036838.mozfiles.com/files/1036838/federosen.pdfIn PDF document text
    • https://site-1036639.mozfiles.com/files/1036639/97868381351.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006684.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006684.bin)
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/kitepolukepokep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1460/9305/files/rugutusoweme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7424/8097/files/zuwigirozeravugizabig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/rusovurasozikozizivamamo.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 extracted file (font_00_sfnt_off00006684.bin)

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6684 5440 bytes
SHA-256: 0039db30fb28a69f65d89c425a34e235fd10dc8d705a6844131403bb180336ec
font_01_sfnt_off00007912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7912 9868 bytes
SHA-256: fd70e81ad09fa6adb9ae04162c925644bc997996d58436ce96941b3a56f16fda

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